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TRUEIFALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) Sampling error is the difference between a sample statistic
TRUEIFALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) Sampling error is the difference between a sample statistic and a population parameter. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 2) As the size of the sample increases. the A) sampling error increases B) standard error of the mean becomes smaller C) shape of the sampling distribution becomes wider D) population standard deviation increases 3) AutoTrader.com would like to estimate the number of years owners keep the cars that they purchased as a new vehicle. The following data shows the age of seven vehicles that were sold for the first time by their owners. 4 12 3 10 7 4 5 Using this sample. the point estimate for the age of cars sold for the first time is . A) 5.72 B) 3.50 C) 6.43 D) 4.86 4) A random sample of 13 hotels in Santa Clara County had an average nightly room rate of $172.10 with a sample standard deviation of $23.90. The 99% confidence interval around this sample mean is . A) ($155.55. $168.65) B) ($151.88. $192.32) C) ($158.86, $175.34) D) ($165.48, $178.72) 5) The National Center for Education would like to estimate the proportion of students who defaulted on their student loans for the state of Arizona. The total sample size needed to construct a 95% confidence interval for the proportion of student loans in default with a margin of error equal to 4% is . A) 336 B) 455 C) 416 D) 601
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