17. Company A claims that their product is more consistent than the competition, Company B. We have been collecting data from Company B for many years and feel certain that Company B has a mean of u = 23.5 and a standard deviation of o=.43. W wish to perform an a= .05 level test. We now collect 10 pieces of data from Company A. The mean of that data is 24.6 and the standard deviation of that data is .36. What is your data value (test statistic) for this problem (3-decimal places)? Type your answer here Write the exact same data value again (3-decimal places) Type your answer here What is your chart number for this problem? Type your answer here

17. Company A claims that their product is more consistent than the competition, Company B. We have been collecting data from Company B for many years and feel certain that Company B has a mean of u = 23.5 and a standard deviation of o=.43. W wish to perform an a= .05 level test. We now collect 10 pieces of data from Company A. The mean of that data is 24.6 and the standard deviation of that data is .36. What is your data value (test statistic) for this problem (3-decimal places)? Type your answer here Write the exact same data value again (3-decimal places) Type your answer here What is your chart number for this problem? Type your answer here

Name: 17. HT2Fill in the BlanksType youranSwers In all of the blanks and su
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Description: 17. HT2Fill in the BlanksType youranSwers In all of the blanks and submlt17. Company A claims that their product is more consistent than thecompetition, Company B. We have been collecting data from Company Bfor many years and feel certain that Compa

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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A psychologist is studying the self image of smokers, as measured by the self-image (SI) score from a personality inventory. She would like to examine the mean SI score, μ, for the population of all smokers. Previously published studies have indicated that the mean SI score for the population of all smokers is 85 and that the standard deviation is 15, but the psychologist has good reason to believe that the value for the mean has changed. She plans to perform a statistical test. She takes a random sample of SI scores for smokers and computes the sample mean to be 75. Based on this information, complete the parts below. (a) What are the null hypothesis Ho and the alternative hypothesis H₁ that should be used for the test? μ x H₁ : ☐ H₁:0 □<ロ □ㄨˇ O
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3. At a land farm, a farmer desired to test the effect of a given fertilizer on soybean production. He chose 24 plots of land of which are equal surface area. He treated 12 plots with the fertilizer and the others were untreated. Otherwise the conditions were the same. The treated plots produced soybean with mean yield 5.1 bushels and a standard deviation of 0.36 bushels, while the untreated plots had mean yield 4.8 bushels and a standard deviation of 0.40 bushels. (a) Can we conclude that there is a significant improvement in soybean production because of the fertilizer if a significance level of 1% is used? (b) What is the P-value of the test?
This research was conducted with Korean adolescents in the Los Angeles area. Would you be willing to generalize the results of this study to Korean adolescents who live in other regions of the country? Why or why not.
In Mr Samboko courses, the coeﬃcient of correlation between General biology I and General-biology II for 20 students is 0.3, Mean of General biology I and General-biology II are 15 and 20 respectively and also the standard deviation of General biology I and General-biology II are 4 and 5 respectively. At the time of calculation one item 27 has wrongly been taken as 17 for General biology I and 35 instead of 30 for General biology II. As a biostatistics student ﬁnd the correct coeﬃcient of correlation between General biology I and General-biology II for 20 students.
2. Two stores at SM Downtown are selling batteries for cell phones. Store A claims an average battery life of 12 hours while Store B advertises an average of 14 hours. Why would we need to know the standard deviation of the battery life before deciding what brand to buy? Suppose the standard deviation are 1.5 hours for A and 1 hour for B, which battery is more likely to last all day?
2. Alfred scored 82 in a quiz in English for which the average Score of the class was 75 with a standard deviation of 10. He also took a quiz in Statistics and scored 70 for which the average score of the class was 55, and the standard deviation was 14. Relative to other students in the class, did Alfred do better in English or Statistics?
A consumer advocacy group is doing a large study on car rental practices. Among other things, the consumer group would like to do a statistical test regarding the mean monthly mileage, µ, of car rented in the U.S. this year. The consumer group has reason to believe that the mean monthly mileage of cars rented in the U.S. this year is different from last year’s mean, which was 2700 miles. The group plans to do a statistical test regarding the value of µ. It chooses a random sample of monthly mileages and computes the mean of the sample to be 2565 miles and the standard deviation to be 800 miles. What are the null hypothesis (H0) and the alternative hypothesis (H1) that should be used for the test? H0: µ is ____ __? __ H1: µ is ____ __ ? ___ In the context of this test, what is a Type II error? A Type II error is ?________ ___ the hypothesis that µ is ? _____ ? when, in fact, µ is ? ____ Suppose that the group decided to reject the null…
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A psychologist is studying the self image of smokers, as measured by the self-image (SI) score from a personality inventory. She would like to examine the mean SI score, µ, for the population of all smokers. Previously published studies have indicated that the mean SI score for the population of all smokers is 80 and that the standard deviation is 15, but the psychologist has good reason to believe that the value for the mean has changed. She plans to perform a statistical test. She takes a random sample of SI scores for smokers and computes the sample mean to be 88. Based on this information, complete the parts below. (a) What are the null hypothesis H. and the alternative hypothesis H₁ that should be used for the test? Ho : H₁ :0 (b) Suppose that the psychologist decides not to reject the null hypothesis. What sort of error might she be making? Type I Suppose the true mean SI score for all smokers is 80. Fill in the blanks to describe a Type I error. the hypothesis that u is (Choose…