Asimple random sample of size nequals79 is obtained from a population that is skewed left with muequals59 and sigmaequals8. does the population need to be normally distributed for the sampling distribution of x overbar to be approximately normally distributed? why? what is the sampling distribution of x overbar?

9/10 divide by -3/15 as a mixed number

Apoll is being conducted at a mall nothingto obtain a sample of the population of an entire country. what is the frame for this type of​ sampling? who would be excluded from the survey and how might this affect the results of the​ survey? what is the frame for this type of​ sampling? a. the frame is people who need new clothes. b. the frame is people who shop at the mall. c. the frame is people who like to shop. d. the frame is the entire population of the country. who would be excluded from the survey and how might this affect the results of the​ survey? a. any person that does not need new clothes is excluded. this could result in sampling bias due to undercoverage. b. any person who does not shop at the mall is excluded. this could result in sampling bias due to undercoverage. c. any person who does not shop at the mall is excluded. this could result in nonresponse bias due to people not participating in the poll. d. there is nobody that is being excluded from the survey.

Find the unit rate.enter answer as a mixed number a fertilizer cover 2/3 square foot in 1/2 hour the unit rate is squares feet per hour