Hiram asked his math class “How many pets do you own?” He graphed the results on the line plot. Which is the best description of the data? a. Themedianis2.5,,.
b. Themodeis2,,andthereisagapfrom3-4.< br /> c. The range is 7, there is a peak at 5, and 6, 7, and 0 are outliers.
d. Themeanisabout3.1,therearenogapsoro utliers, apeakat2,andthedataisnot
symmetrical.

Arandom sample of 15 observations is used to estimate the population mean. the sample mean and the standard deviation are calculated as 172 and 63, respectively. assume that the population is normally distributed. a. with 99 confidence, what is the margin of error for the estimation of the population mean? b. construct the 99% confidence interval for the population mean. c. construct the 95% confidence interval for the population mean. d. construct the 83% confidence interval for the population mean. hint: you need to use excel function =t.inv.2t to find the value of t for the interval calculation.