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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 19PFA
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A national nursing organization is lobbying congress for funding to hire more nurses nationwide. One of the arguments is that nurses, on average, work significantly longer than full time duty, assuming full time is 40 hours per week. A sample of n = 9 nurses had the following work hours last week: 43, 45, 48, 41, 45, 50, 50, 53, 48 (Use a = 0.05, one-tail test) 26. Calculate the observed t statistic for the sample. 27. Construct a 95% confidence interval to estimate the mean number of hours worked for the populations of nurses. What is the lower limit of this confidence interval? a. 95% CI [44.07, 49.93] b. 95% CI [38.13, 55.87] c. 95% CI [41.14, 52.86] d. 95% CI [40.01, 53.99] 28. What conclusion can be made from these data? a. Reject the null; there was a significant difference b. Reject the null; there was not a significant difference Fail to reject the null; there was a significant difference d. Fail to reject the null; there was not a significant difference C.
Transcribed Image Text:A national nursing organization is lobbying congress for funding to hire more nurses nationwide. One of the arguments is that nurses, on average, work significantly longer than full time duty, assuming full time is 40 hours per week. A sample of n = 9 nurses had the following work hours last week: 43, 45, 48, 41, 45, 50, 50, 53, 48 (Use a = 0.05, one-tail test) 26. Calculate the observed t statistic for the sample. 27. Construct a 95% confidence interval to estimate the mean number of hours worked for the populations of nurses. What is the lower limit of this confidence interval? a. 95% CI [44.07, 49.93] b. 95% CI [38.13, 55.87] c. 95% CI [41.14, 52.86] d. 95% CI [40.01, 53.99] 28. What conclusion can be made from these data? a. Reject the null; there was a significant difference b. Reject the null; there was not a significant difference Fail to reject the null; there was a significant difference d. Fail to reject the null; there was not a significant difference C.
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