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a. For this study, we should use t-test for a popułation mean b. The null and alternative hypotheses would be: Hạ: [pvv = C. The test statistic t v (please show your answer to3 decimal places.)

a. For this study, we should use t-test for a popułation mean b. The null and alternative hypotheses would be: Hạ: [pvv = C. The test statistic t v (please show your answer to3 decimal places.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 22PFA
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The average final exam score for the statistics course is 79%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is lower. The final exam scores for the 13 randomly selected students who were glven the colored pens are shown below. Assume that the distribution of the population is normal. 87, 58, 66, 70, 71, 72, 90, 83, 60, 63, 70, 89, 60 What can be concluded at the the a = 0.05 level of significance level of significance? a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: Hạ: [pv|V| = H: [uvv # C. The test statistic t v (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is <v a f. Based on this, we should rajact vV the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest that the population mean final exam score for students who are given colored pens at the beginnlng of class Is not signlficantly lower than 79 at a= 0.05, 50 esc F2 F3 F4 F5 F6 F7 @ %23 24 % 2 3 4
Transcribed Image Text:The average final exam score for the statistics course is 79%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is lower. The final exam scores for the 13 randomly selected students who were glven the colored pens are shown below. Assume that the distribution of the population is normal. 87, 58, 66, 70, 71, 72, 90, 83, 60, 63, 70, 89, 60 What can be concluded at the the a = 0.05 level of significance level of significance? a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: Hạ: [pv|V| = H: [uvv # C. The test statistic t v (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is <v a f. Based on this, we should rajact vV the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest that the population mean final exam score for students who are given colored pens at the beginnlng of class Is not signlficantly lower than 79 at a= 0.05, 50 esc F2 F3 F4 F5 F6 F7 @ %23 24 % 2 3 4
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