Suppose you have a group of fourth graders and a group of eighth graders, and you want to compare the average amount of sleep per night, in hours, for the fourth graders vs. eighth graders. Which is the most appropriate test to use?

Suppose you have a group of fourth graders and a group of eighth graders, and you want to compare the average amount of sleep per night, in hours, for the fourth graders vs. eighth graders. Which is the most appropriate test to use?

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 test statistic is enter your response here.

Q: For the following scores, Participant X Y A 2 6 B 3 3 C 4 2 D 7 1 Draw a scatterplot…

A: Procedure to draw scatter plot: Draw the x axis starting from 0 to 8 with 1 unit scale. Draw the y…

Q: You are studying the effect of exposure to color on mental dexterity. From a group of 37, 18 are…

A: Given data: Sample size (n) = 37 Only one group is given To find: What are the degrees of freedom…

Q: school psychologist wanted to know if the class size changed from small (n=10), medium (n=25) to…

A: The Chi-Square test of independence is known as a method that is used to define whether there is a…

Q: .If you are at the 90th percentile in terms of GPA, then 90% of the sample has a lower GPA than you.…

A: Percentile : Percentile is the number such that certain percentage of data fall below that number.…

Q: Natasha is a physician looking to determine whether a supplement is effective in helping men lose…

A: Test statistic results:For testing whether a supplement is effective in helping men lose weight or…

Q: Illustrate the Test R2 for significance?

A: Coefficient of determination: The coefficient of determination (r2) is the percentage of total…

Q: Suppose we would like to know the difference between the true proportion of females and males who…

A: The z- test for two sample proportions can be defined as a statistical technique that can be used to…

Q: Santa was interested in increasing toy productivity. He randomly assigned elves into 2 separate…

A: Introduction: It is required to identify the suitable type of test.

Q: 4. Last week Sarah had exams in Math and in Spanish. On the Math exam, the mean was p = 40 with o =…

Q: A school psychologist wanted to know if the class size changed from small (n=10), medium (n=25) to…

A: The Chi-Square test of independence is a method that is used to define whether there is a…

Q: To compare the time they spent running on the wheel between the three different days (in other…

A: ANOVA To check the difference in mean excercise time of rats in three different conditions.

Q: Felix has just received his monthly credit card statement. He placed 8 charges on his card in the…

A: Given: 7 Charges 23.63, 20.59, 21.21, 26.85, 24.84, 15.36, 23.60

Q: #1 = $48,877 a2 = $55,157 81 = $16,000 82 = $12,000 a. Formulate hypotheses so that, if the null…

A: Given Data : For Finance majors x̄1 = 48877.0 s1 = 16000.0 n1 = 130…

Q: What is the main difference between z score and T score?

A: Z Score and T scores are both used in Hypothesis testing. Z score is used while using z test and T…

Q: please answer a, b, c B. H0: P OR μ H1: P OR μ C. T or z statistic

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: n a city with three high schools, all the ninth graders took a Standardized Test, with these…

A: Formula : x¯ =x¯1 n1+x¯2 n2 + x¯3 n3n1+n2+n3

Q: What percentage of scores fall between the following z scores: -1 to +1; -1 to +2; and -1 to +3?

A: a) -1 to +1 = P(-1<z<1) = P(Z<1)-P(Z<-1) =0.8413-0.1587 =0.6826 =68.26%

Q: Use the following information to answer the next five exercises. A doctor wants to know if a blood…

A: The question is based on a hypo. testing of a paired data set Given :

Q: What is the power of a test?

A: Power of test is the probability of rejecting the null hypothesis when it is false. Therefore, the…

Q: A sample of n equals 20 scores is transformed into z-scores what is the meaning for the set of 20…

Q: After all her students did poorly on their first Science exam, a teacher doubled the amount of…

A: It is needed to determine the appropriate testing procedure for the given scenario.

Q: Test the claim that the proportion of people that own lawn mowers is more than 59%. If you fail to…

Q: b. The test statistic ( z |(please show your answer to 3 decimal places.) c. The p-value = |(Please…

A: Given 389 of 637 blondes had boyfriends and 342 of 630 brunettes had boyfriends. α=0.10

Q: A researcher is interested in determining if sleeping more hours the night before an exam will…

A: The objective of the question is to identify the dependent variable in the given research scenario.…

Q: In July 2004, Gallup Poll asked 1005 US adults if they actively try to avoid carbohydrates in their…

A: From the given data Which test should you use?

Q: explain the logic of one-sided and two-sided significance tests and the scientific advantage of…

A: The objective is to explain the logic of one-sided and two-sided significance tests. To compare the…

Q: cw2 In a city with three high schools, all the ninth graders took a Standardized Test, with these…

A: Step 1:Step 2: Step 3: Step 4:

Q: (SR 7.19) According to a Gallup poll, 63% of concession stand workers like the smell of their…

A: Here use normal approximation because sample size is too large

Q: The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.25…

A: Given,n=1908x=439p^=xnp^=4391908=0.2301

Q: Can you break down how to obtain the SS1 and SS2 scores

A: In given solution and formula for computing SS1 and SS2 is correct but x1 and x2 taken wrong. for…

Q: A clinical psychologist wants to test the effectiveness of three new therapies that have been…

A: The effectiveness of 3 new therapies that are developed for anxiety symptoms reduction is wanted to…

Q: An administer claims that the proportion of students who pass a particular test given to all college…

Q: Suppose you conducted a t test on independent data. One group had 49 individuals and the second…

A: We have to find degree of freedom..

Q: Suppose that your younger sister is applying for entrance to college and has taken the SAT. She…

Question

Suppose you have a group of fourth graders and a group of eighth graders, and you want to
compare the average amount of sleep per night, in hours, for the fourth graders vs. eighth graders.
Which is the most appropriate test to use?

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

Similar questions

In Class Exercise You are asked to evaluate the effect of a fast acting blood pressure medication. You take a random sample of 200 people from the population and assign half of them at random to take the pill. Of the 100 you told to take the pil| 25 refuse and 75 take it. At the end of a week you check the blood pressure of the group assigned to get the pill and it is 120 on average and the blood pressure of the group assigned to control is 127.5 on average. 1. What is Y;, what is Z;, what is D;? 2. What is the first stage? Estimate and interpret 3. What is the reduced form? Estimate and interpret. 4. What is the effect of the drug on blood pressure?
Decide if each of the following statements is True or False. If a sample of n = 10 scores is transformed into z-scores, there will be five positive z-scores and five negative z-scores. True False
Use the chart below to answer questions 1-6 about the ACT's. The ACT is a standardized test used by college admissions offices as a factor in whether an applicant is or is not admitted to their college. Since so many students take this test each year, the distribution of results are typically approximately normal. The table below shows the mean and standard deviation for each section of within the ACT for all test takers in the years 2015, 2016, and 2017. Standard Section Mean Deviation English 20.3 6.8 Math 20.7 5.4 Reading 21.4 6.5 Science 20.9 5.5 STEM 21.0 5.2 A
Why must the sum of all fs in a sample equal N?
Help!!! me
be quick pls needed urgently...
The reaction times of ten subjects was measured. The median reaction time was 3.7s seconds. The reaction times of nine of the subjects were 3.5s, 3.5s, 3.5s, 3.6s, 3.7s, 3.8s, 3.8s, 3.9s, 3.9s. Was the tenth reaction time?
What is the p value for the following scenario: Out of 300 male inpatients, there are 195 that have a MCC and out of 450 female inpatients 205 have a MCC.
Suppose we want to compare the GPA for students in at least three different social classes (Upper, Middle, Working). We obtain GPA records for a randomly selected set of 30 students, ten from each social class group. What test should you use and why?
Read the following problem description then choose the correct null and alternative hypothesis. A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO is less than 1 in every one thousand.
8 students took a test. 3 of them scored 4, 4 and 7 marks respectively. Given that the median and mode is 5, the upper quartile is 8 and the largest score is thrice the smallest score, find the scores of the other 5 students.
Suppose that 75%75% of college students prefer pepperoni on their pizzas. You took a sample of ?=150n=150 at your college and found that 70%70% said they want pepperoni on their pizzas. You want to know if your college is different from the rest at the 10%10% level. What is the ?P‑value for this test?