Do men score lower on average compared to women on their statistics finals? Final exam scores of tenrandomly selected male statistics students and ten randomly selected female statistics students are shownbelow.Male: 84629466656388776173Female: 68799797889980996980Assume both follow a Normal distribution. What can be concluded at the the a = 0.05 level of significancelevel of significance?For this study, we should use Select an answera. The null and alternative hypotheses would be:Ho: Select an answer vSelect an answerSelect an answer v (please enter a decimal)H1: Select an answer vSelect an answer VSelect an answer v (Please enter a decimal)b. The test statistic ? v(please show your answer to 3 decimal places.)=с. The p-valuе 3D(Please show your answer to 4 decimal places.)d. The p-value is ? v ae. Based on this, we should Select an answer v the null hypothesis.f. Thus, the final conclusion is that ...O The results are statistically insignificant at a = 0.05, so there is insufficient evidence toconclude that the population mean statistics final exam score for men is less than thepopulation mean statistics final exam score for women.O The results are statistically significant at a = 0.05, so there is sufficient evidence to concludethat the population mean statistics final exam score for men is less than the population meanstatistics final exam score for women.%3DO The results are statistically insignificant at a =evidence to conclude that the population mean statistics final exam score for men is equal tothe population mean statistics final exam score for women.0.05, so there is statistically significantO The results are statistically significant at a =0.05, so there is sufficient evidence to concludethat the mean final exam score for the ten men that were observed is less than the mean finalexam score for the ten women that were observed.

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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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Do the poor spend less time in the shower than the rich? The results of a survey asking poor and rich people how many minutes they spend in the shower are shown below. Poor 23 27 38 39 24 29 17 32 31 38 14 25 33 36 38 50 25 Assume both follow a Normal distribution. What can be concluded at the the a= 0.10 level of significance level of significance? For this study, we should use Select an answer Rich: 33 14 24 29 a. The null and alternative hypotheses would be: Ho: Select an answer H₁: Select an answer b. The test statistic ? Select an answer Select an answer = myopenmath.com@ Select an answer Select an answer (please enter a decimal) (Please enter a decimal) O (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) c. The p-value = d. The p-value is να e. Based on this, we should Select an answer the null hypothesis. f. Thus, the final conclusion is that ... The results are statistically significant at a = 0.10, so there is sufficient evidence to…
The midterm and final exam grades for a statistics course are provided in the data set below. Jaymes, a student in the class, scored 86 on both exams. Treat the given data sets as samples. Midterm: 80, 78, 85, 82, 79, 79, 78, 86, 80, 84, 78, 84, 80, 84, 81, 78, 81, 82, 78, 84 Final: 81, 88, 68, 69, 69 81, 82, 86, 76, 71, 72, 68, 77, 86, 68, 83, 84, 71, 81, 87 z-score for midterm: 1.857 z-score for final: 1.181 Based on the z-scores calculated above, which of Jaymes's grades is more unusual, the midterm grade or the final exam grade? Select the correct answer below: A. The absolute value of the z-score for the final exam grade is greater than for the midterm grade, so the final exam grade is more unusual. B. The absolute value of the z-score for the midterm exam grade is less than for the final grade, so the midterm grade is more unusual. C. The absolute value of the z-score for the midterm exam grade is greater than for the final grade, so the midterm grade is more…
Is there a difference between the ages of Actors and Actresses? The table shows the ages of Actors and Actress when they received their first Oscar. Assume that the two samples are randomly selected. At the 0.1 significance level, test the claim that there is a mean difference in the ages of Actors and Actresses. (Be sure to subtract in the same direction). Actor (years) Actress (years) Difference (years) 60 60 52 56 61 61 62 58 36 36 49 51 45 50 What are the correct hypotheses? (Select the correct symbols and values.) Họ: Select an answer ? v Select an answer H1: Select an answer v ? v Select an answer Original Claim = Select an answer df = 15
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Researchers want to know if a tutoring program affects students’ ACT scores. They used a sample of twenty students and tested them before and after the tutoring program. Use Excel to perform a dependent sample t-test to determine whether the difference between the mean pretest score and the mean posttest score is significantly different. Assume unequal variance. Subject Pretest Posttest 1 21 25 2 30 33 3 25 26 4 28 31 5 31 34 6 16 16 7 19 21 8 21 24 9 26 27 10 34 34 11 22 23 12 18 24 13 14 17 14 19 23 15 24 25 16 33 30 17 25 27 18 26 26 19 22 24 20 19 18
Listed in the accompanying table are heights (in.) of mothers and their first daughters. The data pairs are from a journal kept by Francis Galton. Use the listed paired sample data, and assume that the samples are simple random samples and that the differences have a distribution that is approximately normal. Use a 0.05 significance level to test the claim that there is no difference in heights between mothers and their first daughters. ... Question content area top right Part 1 Mother 62.0 65.0 64.7 65.5 65.0 67.0 66.0 66.5 63.0 58.5 Daughter 68.0 69.0 66.5 63.0 68.0 62.0 66.5 66.7 63.5 66.5 Question content area bottom Part 1 In this example, μd is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the daughter's height minus the mother's height. What are the null and alternative hypotheses for the hypothesis test? H0:…
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The number of traffic accidents in a city was recorded for a year is as reported below. What is the sample variance? Jan Feb Mar Apr May Jun | Jul Oct Aug Sep Nov 18 18 20 19 37 28 48 36 38 41 35 O 131.61 ○ 117.00 ○ 116.00 O 120.63

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