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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
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Phoniex University
Oct-2001 - Nov-2016
7.4 You have developed a series of questions to measure burnout in social workers. A random sample of 100 social workers working in greater
7.7
A random sample of 429 college students was interviewed about a number of matters.
a.
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They reported that they had spent an average of $378.23 on textbooks during the previous semester. If the sample standard deviation for these data is $15.78, construct an estimate of the population mean at the 99% level.
b. They also reported that they had visited the
health clinic an average of 1.5 times a semes- ter. If the sample standard deviation is 0.3, construct an estimate of the population mean at the 99% level.
c. On average, the sample had missed 2.8 days
of classes per semester because of illness. If the sample standard deviation is 1.0, construct an estimate of the population mean at the 99% level.
d. On average, the sample had missed 3.5 days
of classes per semester for reasons other than illness. If the sample standard deviation is 1.5, construct an estimate of the population mean at the 99% level.
metropolitan Shinbone, Kansas, has an average score of 10.3, with a standard deviation of 2.7. What is your estimate of the average burnout score for the population as a whole? Use the 95% confidence level.
7.5
SOC A researcher has gathered information from a random sample of 178 households. For each variable below, construct confidence inter- vals to estimate the population mean. Use the 90% level.
a. An average of 2.3 people resides in each household. Standard deviation is 0.35.
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