The security department of a factory wants to know whether or not the true average time required by the night watchman to walk hisround is 25 minutes. If in a random sample of 42 rounds, the night watchman averaged 25.6 minutes with a standard deviation of 1.5minutes, determine at the 0.01 level of significance whether this is sufficient evidence to reject the null hypothesis.Answer the following questions according to the text above.1- Choose the relevant hypotheses.Ho:H:2- Compute the test statistic.(Note that; za means z, or ta(df)3- What is the decision rule for the test.means t,(df) )4- State your decision and conclusion.5- Calculate the p-value for the test.

As per our guidelines, we are allowed to answer first three sub-parts only. Thanks The following…

Answered: 1- Choose the relevant hypotheses. Ho:…

1- Choose the relevant hypotheses. Ho: H: 2- Compute the test statistic. (Note that; za means z, or ta(df) 3- What is the decision rule for the test. means t,(df))

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 mean height of a certain kind of plant is 148 centimeters. Suppose we want to carry out a…

A: Ans- Given , the mean height of a certain kind of plant is 148 centimetres. Suppose we want to…

Q: Question In Images: Using the Emotionality scores for the Dog Breeds, and the 7 steps of…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: Based on a sample of 60 men, 35% owned cats Based on a sample of 20 women, 55% owned cats The test…

A: Let's perform the calculations:For men:Sample size (men): n1 = 60Proportion of men who owned cats:…

Q: ent where a farm was looking at the affect of fertilizer on plant growth, what would be the…

A: Reliable knowledge is not true knowledge but unjustified.

Q: Data for (3) A random sample of 100 statisticians were asked, "To what extent do you feel the…

A: Solution To draw the distribution pie chart is appropriate because the sample size is large and the…

Q: The blue catfish (Ictalurus Furcatus) is the largest species of North American catfish. The current…

A: Given that: n=43x¯=40.49s=2.89 Significance level, α=0.05

Q: Based on a sample of 60 men, 35% owned cats Based on a sample of 20 women, 55% owned cats The test…

A: Men : N1 = 60 p1 = 35% = 0.35 n1 = p1*N1 = 0.35*60 = 21Women : N2 = 20 p2 = 55% = 0.55 n2 = p2 * N2…

Q: Medicine A treats Symptom Y. 900 subjects with Symptom Y volunteered to take Medicine A and 140 were…

A: Medicine A treats Symptom Y. 900 subjects with Symptom Y volunteered to take Medicine A and 140…

Q: Test of Significance and their Test Statistics We have studied 2 different test statistics, the z…

A: 1) For Z test the value of the test statistic formula can be written as: Here, x̄ is the sample…

Q: A grocery store manager wants to know if displaying cranberries near the entrance to the store…

A: P1 : Proportion of shoppers who buy Cranberries when they are near the store entrance. P2 :…

Q: Based on a sample of 60 men, 35% owned cats Based on a sample of 20 women, 55% owned cats The test…

A: First sample (Men), Number of men n1= 60Proportion of men who owned cats, 1=0.35Number of men who…

Q: 8 students took a test. 3 of them scored 4, 4 and 7 marks respective Given that the median and mode…

A: 4, 4, 5, 5, 5, 7, 9, 12 According to the given information, The total number of students are 8.…

Q: Previously, 5% of mothers smoked more than 21 cigarettes during their pregnancy. An obstetrician…

A: p=0.05n=115x=2sample proportion

Q: You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: sing the COVID-19 worry data and political party data that you wrote about above, go ahead and…

A: The data on Number of times worry per day is represented by : Clinton Voters Trump Voters…

Q: A recent study found that 23.6% of people are afraid of spiders. A researcher believes this is…

A: Consider that p is the true proportion of college students who are afraid of spiders.

Q: Consider a hypothesis test about two proportions, Ho: pi = P2 versus Ha: P1 + P2. If the alternative…

Q: ANOVA rather than multiple t-tests when you are analyzing an experiment with three or more…

A: Here using difference of ANOVA ans multiple t test answer the question

Q: MULTIPLE CHOICE According to a report from the United States Environmental Protection Agency,…

A: Type II error is the probability of fail to rejecting the null hypothesis when it is actually not…

Q: Use the 4 steps of hypothesis testing to determine if there is a significant relationship. solve it…

A: A researcher wants to determine if there is relationship between amount of walking during the day…

Q: test the hypothesis using the P-value approach. Be sure to verify the requirements of the test.…

A: Given:Null hypothesis H0 : P=0.7Alternative hypothesis H1: P<0.7Level of significance =…

Q: Why is there a need to strictly consider the critical value and test-statistic value in the decision…

A: Critical value: the value of test distribution which separates the critical( rejection) region and…

Q: The null and alternative hypotheses are given. Determine whether the hypothesis test is left-tailed,…

A: Given that Null hypothesis=H0 Vs Alternate hypothesis=H1 H0 : μ =125 H1 : μ < 125

Q: Ar. Dela Cruz, a product design consultant, claims that at least 10% of all sports helmets have…

A: We have given that Sample size n =200 Favorable cases x =16 Sample proportion p^=x/n =16/200 =0.08…

Q: If the value of the observed test statistic falls in the rejection region, the alternative…

A: Identify the correct option for if the value of the observed test statistic falls in the rejection…

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: The data shows the lengths in hours of their work week.

Q: Use Sheet 2 of the Excel file to answer the following questions. A school administrator believes…

A: Given, n = 50 μ = 2.75 α = 0.05 To find,

Q: Inferential Statistics Are the M&M’s weights accurate? According to the package, each small bag of…

A: The hypothesis test are used to measure the mean significance between the sample and population. It…

Q: ← The display provided from technology available below results from using data for a smartphone…

A: From the given technology results we have μ < 5 t = -0.288047 p = 0.387332 x = 4.78 Sx =…

Q: Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test.…

Q: 2. [6] Below is data from a sample of elected presidents and their main opponent in the same year.…

A: Given that -

Q: Find p value (a) upper-tailed test, df = 7, t = 2.00 (b) upper-tailed test, n = 14, t = 3.50…

A: Hi! Thank you for the question. As per the honor code, we are allowed to answer three sub-parts at a…

Q: Heights (cm) and weights (kg) are measured for 100 randomly selected adult males, and range from…

A: The given regression line is: y^ =-109+1.16x

Q: If a t-test dependent samples produced t(18) - 3.32, p < .01, 2-tails test, how many participants…

A: The type of test is two tailed test The value of t-test statistic for depend samples is, t = 3.32…

Q: est the hypothesis using the P-value approach. Be sure to verify the requirements of the test.…

A: Given that Null hypothesis H0: p=0.72 Alternative hypothesis H1: p≠0.72 Sample size (n) = 500 (x)…

Q: Test the claim that the proportion of men who own cats is significantly different than the…

A: Test statistic: Given information, n1=40p^1=0.40n2=60p^2=0.45 Consider, p^=n1*p^1+n2*p^2n1+n2…

Q: Let r be number of success from the n trials take from a population with proportion of success = p,…

Q: 6 A researcher performed the following hypothesis test: Ha: p = 0.35 The test statistic for the test…

A: Given, Test Statistic: z = -2.19 Alternative Hypothesis: HA:p<0.35 The objective is to…

Q: est the hypothesis using the P-value approach. Be sure to verify the requirements of the test.…

Q: Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test.…

Question

The security department of a factory wants to know whether or not the true average time required by the night watchman to walk his
round is 25 minutes. If in a random sample of 42 rounds, the night watchman averaged 25.6 minutes with a standard deviation of 1.5
minutes, determine at the 0.01 level of significance whether this is sufficient evidence to reject the null hypothesis.
Answer the following questions according to the text above.
1- Choose the relevant hypotheses.
Ho:
H:
2- Compute the test statistic.
(Note that; za means z, or ta(df)
3- What is the decision rule for the test.
means t,(df) )
4- State your decision and conclusion.
5- Calculate the p-value for the test.

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Statistical Power and Errors$

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

Hypothesis Test of the Difference Between Two PAIRED Means. Im pretty sure this should be a one tailed test, as does my teacher does an example for this and her's had one tail. Help me understand which tail it is (what lead you to believe it was right or left tail.) I will need the test statistic and critical value(s). You will need the null and alternative (H0: u1=u2, H1: u1=/=u2). The equation that is needed to solve this is t= d *bar* - Ud / (Sd/*square root* of n) D.O.F formula to be used is n-1. This is all the infomartion I think you need might need to determine the kind of problem this is. I've asked this question before but it seems I didn't provide enough information and the answers included two tailed test or something else. Oh also I need these formulas to be used, as in no excel to speed things up because as much as i like shortcuts I need to understand this concept. Standard dev or Sx should be 1.414213562. Pretty sure this is right, not 100%. d *bar* should = -2, pretty…
6- Hi Wonderful Bartleby Team (Thanks for all the help I do really aprecciate all you guys do) I need help with this exercise from stats. Thanks in advance
人 oー + (-12 PUILS] DETAILS DEVORESTAT9 5.E.022.MI. MY NUTES ASK YUUR IEACHER PRACTICE ANOTHER An instructor has given a short quiz consisting of two parts. For a randomly selected student, let X = the number of points earned on the first part and Y = the number of points earned on the second part. Suppose that the joint pmf of X and Y is given in the accompanying table. P(x, y) 0 10 15 0.03 0.060.02 0.10 0.04 0.13.0.20 0.10 10 0.01 0.15 0.15 0.01 (a) If the score recorded in the grade book is the total number of points earned on the two parts, what is the expected recorded score E(X + Y)? (Enter your answer to one decimal place.) (b) If the maximum of the two scores is recorded, what is the expected recorded score? (Enter your answer to two decimal places.) Need Help? Watch It Read It Master It MY NOTES ASK YOUR TEACHER 6. [1/1 Points] DETAILS PREVIOUS ANSWERS BBUNDERSTAT12 6.5.002. What is the standard deviation of a sampling distribution called? O the variance MacBook Pro へ "0.3" esc…
Answer all
Suzette does an experiment where she collects date from 5 women snd obtains the scores: 4, 4, 5, 2, 5. She hypothesizes that the population mean for the population from which these scores are drawn is 3. She wants to test whether this hypothesis is true. What is the alternative hypothesis she is testing?
(b) x = 25.1 Find the value of the test statistic. Find the p-value. p-value - State your concluslon. O Reject Ho. There is sufficient evidence to conclude that u z 22. Reject Hg. There is insufficient evidence to conclude that u = 22. O Do not reject Ho. There is insufficient evidence to conclude that u + 22. O Do not reject Ho: There is sufficient evidence to conclude that u + 22. (c) x = 21 Find the value of the test statistlc. Find the p-value. p-value = State your conclusion. O Reject Ho. There Is sufficlent evidence to conclude that u + 22. O Reject Hg. There is insufficient evidence to conclude that u + 22. O Do not reject Ho- There is insufficient evidence to conclude that pu + 22. O Do not reject Hp. There is sufficient evidence to conclude that u + 22.
Can you please help me located the null?
Example: Independent t-Test ● A group of 30 people jump into the Atlantic. Their temperature is taken immediately when they get out of the water (mean = 96.3). At the same time, the temperatures of 30 random people waiting on the beach are also taken (mean = 98.4). Do the two groups significantly differ? ● a) What hypothesis test? ● b) Assumptions? (pretend they've all been met) c) Hypotheses? ● ● d) If SE= .6, what is the test statistic? ● e) df=?, Critical value=2.000 f) Conclusion? g) 95% Cl of the drop in temperature? ● ●
Please find (c), (d), (e) and if possible check to see if my degrees of freedom is correct please:)
It's just one question with sub-parts. Since you are only allowed to do 3 questions please do D, E, F the last 3 only. Thank you
uppose you reject the null hypothesis H0: μ = 101. It turns out the population mean is actually equal to 101. You have made a Group of answer choices Type I and Type II errors the correct decision Type II error Type I error
H0: p1=p2 H1: p1<p2 1) Identify the test statistic. 2)Identify the P-value.