A study of the effect of television commercials on 12-year-old children measured their attention span, in seconds. The commercialswere for clothes, food, and toys.Clothes272246352831173120Food44493756474234434454555747Toys6164574863534858475151c. What is the test statistic? (Round your answer to 4 decimal places.)The test statistic isg. Compute the 95% confidence intervals that estimate the difference between each pair of means. (Negative amount should beindicated by a minus sign. Round your answers to 2 decimal places.)The interval for the difference between Clothes and Food is fromThe interval for the difference between Clothes and Toys is fromThe interval for the difference between Food and Toys is from(Smaller Mean - Larger Mean)tototo(Larger Mean - Smaller Mean)tototo

Given data: Clothes Food Toys 27 44 61 22 49 64 46 37 57 35 56 48 28 47 63 31 42 53…

Answered: A study of the effect of television…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In a study examining the relation of math ability to the belief that math ability was innate, the belief was considered the predictor variable. The researcher hopes to find a correlation between the participants’ math ability and their belief that math ability is innate. The scores for the three participants are shown below. The group that believed that math is NOT innate scored 66, 70, 50. The group that believed that math IS innate scored 7, 4,10. what are the mean and SD for each group?
State the conclusion for the test. Give reason for your answer.
A researcher is interested in examining the relationship between ACT scores and college GPA. Participant ACT ?̅ = 29.67; ?? = 3.39 GPA ?̅ = 3.30; ?? = .52 1 24 2.75 2 28 3.25 3 29 3.50 4 35 3.75 5 34 4.00 6 30 3.80 7 29 2.60 8 27 2.68 9 31 3.36 Predict the GPA from an ACT score of 22. Predict the GPA from an ACT score of 25. Find the standard error of the estimate. What does this tell you about your predictions?
Need C and D
The work week for adults in the US that work full time is normally distributed with a mean of 47 hours. A newly hired engineer at a start-up company believes that employees at start-up companies work more on average then most working adults in the US. She asks 12 engineering friends at start-ups for the lengths in hours of their work week. Their responses are shown in the table below. Test the claim using a 10% level of significance. Hours 47 47 55 51 48 65 51 52 50 49 51 54 What are the correct hypotheses? Ho: Select an answer ✓ ? ✓ Ha: Select an answer ✓ Test Statistic= hours Based on the hypotheses, find the following: p-value= hours (Give answer to at least 4 decimal places.) (Give answer to at least 4 decimal places).
I often hear the opinion that "people who listen to classical music are smarter". In an attempt to test that claim, I gave an IQ test to twO groups of people: Group 1: Students who primarily listen to non-classical music. Group 2: Students who primarily listen to classical music. Their scores are summarized in the following table: Std. Deviation Group 1 111 Group 2 100 98 87 119 108 102 110 10.392 85 105 97 114 93 101 9.142 < Answer the question using a 0.10 level of significance. Select the response which fills-in-the-blank to create a correct sentence: Based on the information and previous parts of the problem, there listen to classical music tend to perform better on an IQ test than those who do not. evidence to support the claim that students who primarily is certain O is not sufficient O is sufficient O cannot be

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Clothes	Food	Toys
27	44	61
22	49	64
46	37	57
35	56	48
28	47	63
31	42	53
17	34	48
31	43	58
20	57	47
	47	51
	44	51
	54