In a chi-square test, we want to know if the frequency of the noodles is significantly differentfrom what we would expect if they truly have equal chances of occurring. We already have thefrequency of the noodles (in the table above), so now we need to calculate the expectedfrequency of the noodle types. This step is simple with this type of chi-square test:Expected frequency of X-shaped noodles is the theoretical probability of getting an X-shapednoodle times the total number of observations of noodles.We have no reason to expect an unequal probability of getting an X-shaped noodle and an O-shaped noodle, so we will expect a 50% chance for each. As such, calculate the expected cellfrequency of both noodles.4. Calculate the expected cell frequency of the noodles. Show your work by plugging in thevalues. Remember, px-shape represents the probability that a noodle will be shaped like an X. Nis the total number of noodles in our sample.N(px-shape) = () =N(po-shape) = () = You are a paranoid delusional statistician with far too much time on your hands. One day, you sitdown to have a bowl of soup. This bowl of soup happens to be Tic-Tac-Toe themed, meaningthat you have some noodles that are shaped like an X, and some that are shaped like an O. Asyou stir your soup, you notice that this bowl seems to have a particularly high number of X-shaped noodles in it. Being paranoid, you conclude that this has some meaning-like someone istrying to give you a message, possibly warning you of the dangers of x-rays. You jump out ofyour seat and run to get your x-ray-proof cape, and then you pause for a moment and think thatyou should calculate a chi-square statistic for the frequency of X-shaped noodles before freakingout.First, you carefully separate each of the noodles by shape and count them. Here is whatyoufind:Frequency ofNoodlesO-shaped21X-shaped33

Name: In a chi-square test, we want to know if the frequency of the noodles
Uploaded: 2024-03-20T07:06:41.000Z
Channel: Bartleby
Description: In a chi-square test, we want to know if the frequency of the noodles is significantly differentfrom what we would expect if they truly have equal chances of occurring. We already have thefrequency of the noodles (in the table above), so now we need

Given that, there is a 50% chance to expect the X-shaped and O-shaped noodles. That means p= 50% =…

Math

Statistics

In a chi-square test, we want to know if the frequency of the noodles is significantly different from what we would expect if they truly have equal chances of occurring. We already have the frequency of the noodles (in the table above), so now we need to calculate the expected frequency of the noodle types. This step is simple with this type of chi-square test: Expected frequency of X-shaped noodles is the theoretical probability of getting an X-shaped noodle times the total number of observations of noodles. We have no reason to expect an unequal probability of getting an X-shaped noodle and an O- shaped noodle, so we will expect a 50% chance for each. As such, calculate the expected cell frequency of both noodles. 4. Calculate the expected cell frequency of the noodles. Show your work by plugging in the values. Remember, px-shape represents the probability that a noodle will be shaped like an X. is the total number of noodles in our sample. N(px-shape) = ( ) = N(po-shape) = ( ) =

In a chi-square test, we want to know if the frequency of the noodles is significantly different from what we would expect if they truly have equal chances of occurring. We already have the frequency of the noodles (in the table above), so now we need to calculate the expected frequency of the noodle types. This step is simple with this type of chi-square test: Expected frequency of X-shaped noodles is the theoretical probability of getting an X-shaped noodle times the total number of observations of noodles. We have no reason to expect an unequal probability of getting an X-shaped noodle and an O- shaped noodle, so we will expect a 50% chance for each. As such, calculate the expected cell frequency of both noodles. 4. Calculate the expected cell frequency of the noodles. Show your work by plugging in the values. Remember, px-shape represents the probability that a noodle will be shaped like an X. is the total number of noodles in our sample. N(px-shape) = ( ) = N(po-shape) = ( ) =

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: the problem is the type2 error's probability less than 0.1

A: The null and alternate hypotheses areH0:μ=15H1:μ≠15 True mean is μ=14.5 The probability of…

Q: A random sample of 250 physicians shows that there are 40 of them who make at least $400,000 a year.…

A: We have to find value of test statistics.

Q: Calculate the probability for both groups.

A: It is given that The number of family from CA owns a home = 730 The number of family from CA do not…

Q: How many people out of 12 people do you expect to be taller than 6ft.? Now if you keep on…

A: Let X be the number of people over 6 ft with probability p= 10% =0.1 1): number of people selected…

Q: Recall that Benford's Law claims that numbers chosen from very large data files tend to have "1" as…

Q: A local ice cream shoppe found that in a random survey of 80 customers, 27 got one scoop, 14 got two…

A: Total number of customer n=80 , 27 got one scoop, 14 got two scoops, 4 got three scoops, and 35 got…

Q: The next thing you are interested in knowing is if the sex ratio of the crab population in the…

A: The objective of the study is to determine if the sex ratio of the crab population in the Edisto…

Q: Find E(X) = Find Var(2X + 100 - 24) = What is the probability that a child in Sweden can speak…

Q: 2. Write out the null and alternative hypotheses using symbols: Họ: Hạ: Now write out the same…

A: The observed data is given as: frequency of noodles X-shaped O-shaped 33 21

Q: factory has two production lines produces certain goods. The newer production line produces 90% of…

A: event A : goods are produced from new production line event B : product is defective P(A) = 0.90…

Q: Jack has decided to advertise the sale of his car by placing flyers in the student union and the…

A: Let E be the event that potential buyer will read the advertisement then P(E) = 0.3 And, Let F be…

Q: Benford's Law claims that numbers chosen from very large data files tend to have "1" as the first…

A: Determine the level of significance. Significance level: In order to decide how small the…

Q: When you have a certain blood test done, the phlebotomist takes 3 vials of blood that hold 10 mL…

A: (a) Given five selected data are,9.61, 9.65, 9.68, 9.81, 9.93(b) Given five selected data are,454,…

Q: Hotel attendants have to check guests’ IDs because there is probably a law about that. Employees do…

Q: In a computer instant messaging survey, respondents were asked to choose the most fun way to flirt,…

A: Option (a) is right.

Q: 5

A: Given Roll a fair, six-sided die.

Q: (a) (b) the probability that tails will show up 9 times when this coin is tossed 12 times; the…

Q: A and B are two weak students of statistics and their chances of solving a problem in statistics…

A: A = student A got the correct answer B = student B got the correct answer P(A) = 1/6 and P(B) = 1/8…

Q: Environmentalists have accused a large company in the eastern United States of dumping nuclear waste…

A: The objective of this question is to find the probability that both the fish and the animals that…

Q: (b) A box contains eight resistors and the probability that a resistor functions = 0.35. What is the…

A: From the provided information, A box contains eight resistors that is n = 8 The probability that a…

Q: A researcher has participants expecting to receive either painful or mild electrical shocks during a…

A: Usually in survival analysis studies we can use both parametric and non-parametric statistics. For…

Q: Hypertension It has been found that 26% of men 20 years and older suffer from hypertension (high…

A: Given, no of men who have high B.P =40 no of women who have high B.P=53 n1=145 n2=145 p1=26%=0.26…

Q: Salinity in Quebec river is a combination of tides and rain. Rain that diluted the salt occurs about…

A: Given information: PRainNo afternoon tide=0.10PRainAfternoon tide=0.15P(Afternoon tide)=0.50P(No…

Q: At the end of regulation time, a basketball team is trailing by one point and a player goes to the…

A: The team is trailing by one point. a.)P[The basketball team wins at the end of regulation…

Q: The results of an investigation by an expert on a fire accident are summarised below: (i) The…

A: Given: Probability that there would have been a short circuit =0.8Probability of LPG explosion in a…

Q: A true-false exam has 48 questions and an answerer has to choose the correct alterna Matt has not…

A: Let X be the number of correct answer in the true false exam. n= 48 sample size of questions.

Q: The probability of flu symptoms for a person not receiving any treatment is 0.024. In a clinical…

A: Given information: The probability of flu symptoms for a person not receiving any treatment is…

Q: You are conducting a trial of new medications to improve lung function in cystic fibrosispatients.…

A: Here in this question it is given that we are conducting a trial of new medications to improve lung…

Q: In an automated filling operation, when the process is run at slow speed, the probability of an…

A: Let Event X denote the incorrect fill. and Event Y denote the high speed process P (X/Y) = 0.001 P…

Q: An analyst estimates there is a probability of 18 percent that there will be a recession next year.…

A: Given,An analyst estimates there is a probability of 18 percent that there will be a recession next…

Concept explainers

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.

Topic Video

Question

In a chi-square test, we want to know if the frequency of the noodles is significantly different
from what we would expect if they truly have equal chances of occurring. We already have the
frequency of the noodles (in the table above), so now we need to calculate the expected
frequency of the noodle types. This step is simple with this type of chi-square test:
Expected frequency of X-shaped noodles is the theoretical probability of getting an X-shaped
noodle times the total number of observations of noodles.
We have no reason to expect an unequal probability of getting an X-shaped noodle and an O-
shaped noodle, so we will expect a 50% chance for each. As such, calculate the expected cell
frequency of both noodles.
4. Calculate the expected cell frequency of the noodles. Show your work by plugging in the
values. Remember, px-shape represents the probability that a noodle will be shaped like an X. N
is the total number of noodles in our sample.
N(px-shape) = (
) =
N(po-shape) = (
) =

You are a paranoid delusional statistician with far too much time on your hands. One day, you sit
down to have a bowl of soup. This bowl of soup happens to be Tic-Tac-Toe themed, meaning
that you have some noodles that are shaped like an X, and some that are shaped like an O. As
you stir your soup, you notice that this bowl seems to have a particularly high number of X-
shaped noodles in it. Being paranoid, you conclude that this has some meaning-like someone is
trying to give you a message, possibly warning you of the dangers of x-rays. You jump out of
your seat and run to get your x-ray-proof cape, and then you pause for a moment and think that
you should calculate a chi-square statistic for the frequency of X-shaped noodles before freaking
out.
First, you carefully separate each of the noodles by shape and count them. Here is what
you
find:
Frequency ofNoodles
O-shaped
21
X-shaped
33

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Discrete Probability Distributions$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions

A cereal company is putting 1 of 3 prizes in each box of cereal. The prizes are evenly distributed so the probability of winning any given prize is always 1/3. Adam wonders how many boxes he should expect to buy to get all 3 prizes. He carried out 32 trials of a simulation and his results are shown below. Each dot represents how many boxes it took to get all 3 prizes in that trial. 3 4 5 7 8 9 10 11 12 13 # of boxes purchased Use his results to estimate the probability that it takes 9 or more boxes to get all 3 prizes. Give your answer as either a fraction or a decimal. P(9 or more boxes)
You’re a police officer pulling over every car at a checkpoint. You use a breathalyzer on everyone and pay no mind to other signs of sobriety. On a night like this, the chance that a given driver on this road has a blood alcohol content (BAC) over the limit is 2%. The probability of someone with a BAC over the limit testing positive is 100%. The probability of someone who doesn’t have a BAC over the limit testing positive is 5%. If you pull someone over and they test positive, what’s the probability that their BAC is over the limit? Show your work. You may express your answer as a fraction.
I need help with this
A psychologist is concerned about the health of veterans returning from war. She examines 36 veterans and assesses whether they show signs of post-traumatic stress disorder. What is the population of interest? All veterans with post-traumatic stress disorder All veterans returning from war The 36 veterans returning from war The veterans returning from war showing signs of post-traumatic stress disorder statistical power of 95% implies that it is very likely that H0 will be rejected if it is not true. the chance that the alternative hypothesis is true is 95%. the p-value for the study will be 5%. H0 is probably false.
How do I solve the problem from the image below?
z
review(4c): The following table summarizes the outcomes of a study that researchers carried out to determine if females expresses a greater fear of heights than males. Find the expected number of females who should express fear of heights if the variables are indepently related. Round your answer to the nearest whole number. Men Women expressed a fear of heights 68 109 did not express a fear of heights 94 89 (a) 80 (b) 93 (c) 87 (d) 97
You are a paranoid delusional statistician with far too much time on your hands. One day, you sit down to have a bowl of soup. This bowl of soup happens to be Tic-Tac-Toe themed, meaning that you stir have some noodles that are shaped like an X, and some that are shaped like an O. As your soup, you notice that this bowl seems to have a particularly high number of X- you shaped noodles in it. Being paranoid, you conclude that this has some meaning-like someone is trying to give you a message, possibly warning you of the dangers of x-rays. You jump out of your seat and run to get your x-ray-proof cape, and then you pause for a moment and think that you should calculate a chi-square statistic for the frequency of X-shaped noodles before freaking out. First, you carefully separate each of the noodles by shape and count them. Here is what you find: Frequency of Noodles X-shaped O-shaped 33 21 1. What type of chi-square design is this (check one box)? OTwo-cell ОThree-cell OTwo-by-two…
The first test a doctor would order to determine whether a person is infected with HIV (the virus that causes AIDS) is the ELISA test. It detects antibodies and antigens for HIV. A study in Statistical Science by J. Gastwirth estimated that, if the person is actually infected with HIV, this test produces a positive result 97.7% of the time. If a person is not infected with HIV, the test result is negative 92.6% of the time. According the the US Centers for Disease Control (CDC), an estimated 1.1 million Americans out of a population of 321 million were infected with HIV in 2015. Using the information above, determine the probability that a randomly selected person whose ELISA test is positive actually is infected with HIV? a. What is the probability that a randomly selected American is infected with HIV? b. Using the answer to part (a) and the conditional probabilities of positive and negative ELISA test results, fill out the contingency table below: ELISA Test Result…
Hypertension It has been found that 26% of men 20 years and older suffer from hypertension (high blood pressure) and 31.5% of women are hypertensive. A random sample of 170 of each gender was selected from recent hospital records, and the following results were obtained. Can you conclude that a higher percentage of women have high blood pressure? Use a=0.01. Men 46 patients had high blood pressure Women 61 patients had high blood pressure Use P1 for the proportion of men with high blood pressure and round all intermediate calculations to at least three decimal places. Part 1 of 5 (a) State the hypotheses and identify the claim with the correct hypothesis. Ho:P, not claim H : P, < P2 claim This hypothesis test is a one-tailed Part 2 of 5 (b) Find the critical value(s). Round the answer(s) to two decimal places. there is more than one critical value, separate them with commas. Critical value(s):-2.33| Part: 2 / 5 Part 3 of 5 (c) Compute the test value. Round the intermediate calculations…
You are the manager of a manufacturing plant and you are responsible for quality control. Each day, a random sample of 10 items is selected from the production line and tested by a quality control technician. A item can be in good condition or defective, and the probability that an item is defective is 0.05. You know by experience that the technician records the result of the test on an item correctly 80% of the time. Let X be the number of items that were recorded as defective by the technician (in the sample of 10 tested items). (a) Find the probability P(X= 1). (b) If the technician recorded one defective item in the sample, what is the conditional probability that there was no defective item in the sample?
Hypertension It has been found that 26% of men 20 years and older suffer from hypertension (high blood pressure) and 31.5% of women are hypertensive. A random sample of 171 of each gender was selected from recent hospital records, and the following results were obtained. Can you conclude that a higher percentage of women have high blood pressure? Use a = 0.10. Men 44 patients had high blood pressure Women 58 patients had high blood pressure Use p, for the proportion of men with high blood pressure and round all intermediate calculations to at least three decimal places.