1 A population has a mean μ = 87 and a standard deviation = 20 mean and standard deviation of a sampling distribution of samp sample size n = 247. H = (Simplify your answer.) 2

Given population parameters for two populations, population 1 has a mean of 500 and a standard deviation equal to 40. Population 2 has a mean of 28,000 and a standard deviation equal to 5,000. Complete parts a and b below. a) Compute the coefficient of variation for each population. The coefficient of variation of population 1 is %. (Round to one decimal place as needed.) %. The coefficient of variation of population 2 is (Round to one decimal place as needed.) b) Which population has data values that are more variable relative to the size of their population mean? A. Population 1 B. Both populations are equally variable relative to their population means. OC. Population 2

A survey was taken in a college class asking how many people lived in each student's household, with the sample data collected as numbers of people and frequencies.  The data collected is given in the table below.  Number of People (x) Number of Respondents in Survey (f) 1 3 2 6 3 16 4 4   Calculate the standard deviation of the above sample table of frequencies: Round your answer to 2 decimal places and be sure to use the correct formula.

Q1. Find mean, Variance and standard deviation for the distribution X 5 6 7 8 9 10 0.1 0.15 0.1 P(X): 0.05 0.2 0.4