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 c. Fail to reject the null; there was a significant difference d. Fail to reject the null; there was not a significant difference

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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
c. Fail to reject the null; there was a significant difference
d. Fail to reject the null; there was not a significant difference
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 c. Fail to reject the null; there was a significant difference d. Fail to reject the null; there was not a significant difference
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