The average final exam score for the statistics course is 75%. 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 different. The final exam scores for the 16 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 73, 74, 61, 81, 68, 69, 54, 71, 55, 86, 87, 49, 83, 71, 83, 47 What can be concluded at the the αα = 0.01 level of significance level of significance? For this study, we should use (t-test, z-test) The null and alternative hypotheses would be: H0: (symbol) (symbol) ___ H1: (symbol) (symbol) _ The test statistic (symbol) = (please show your answer to 3 decimal places.) The p-value = __ (Please show your answer to 4 decimal places.) The p-value is (symbol) αα Based on this, we should (fail to reject, accept, reject) the null hypothesis. Thus, the final conclusion is that ... The data suggest the populaton mean is significantly different from 75 at αα = 0.01, so there is statistically significant evidence to conclude that the population mean final exam score for students who are given colored pens at the beginning of class is different from 75. The data suggest the population mean is not significantly different from 75 at αα = 0.01, so there is statistically insignificant evidence to conclude that the population mean final exam score for students who are given colored pens at the beginning of class is equal to 75. The data suggest that the population mean final exam score for students who are given colored pens at the beginning of class is not significantly different from 75 at αα = 0.01, so there is statistically insignificant evidence to conclude that the population mean final exam score for students who are given colored pens at the beginning of class is different from 75

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Description: The average final exam score for the statistics course is 75%. 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 different. The final exam scores for the 16 randomly selected

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

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The average final exam score for the statistics course is 75%. 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 different. The final exam scores for the 16 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal.

73, 74, 61, 81, 68, 69, 54, 71, 55, 86, 87, 49, 83, 71, 83, 47

What can be concluded at the the αα = 0.01 level of significance level of significance?

For this study, we should use (t-test, z-test)
The null and alternative hypotheses would be:

H0: (symbol) (symbol) _____

H1: (symbol) (symbol) _____

The test statistic (symbol) = ______ (please show your answer to 3 decimal places.)
The p-value = ______ (Please show your answer to 4 decimal places.)
The p-value is (symbol) αα
Based on this, we should (fail to reject, accept, reject) the null hypothesis.
Thus, the final conclusion is that ...
- The data suggest the populaton mean is significantly different from 75 at αα = 0.01, so there is statistically significant evidence to conclude that the population mean final exam score for students who are given colored pens at the beginning of class is different from 75.
- The data suggest the population mean is not significantly different from 75 at αα = 0.01, so there is statistically insignificant evidence to conclude that the population mean final exam score for students who are given colored pens at the beginning of class is equal to 75.
- The data suggest that the population mean final exam score for students who are given colored pens at the beginning of class is not significantly different from 75 at αα = 0.01, so there is statistically insignificant evidence to conclude that the population mean final exam score for students who are given colored pens at the beginning of class is different from 75.

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