2. A Suay vиas maae to сотраre tпе costs oj supporing a јатпу Jor a ye In aifferent foreign cities. Suppose an executive wants to determine whether there is any difference in the average annual cost of supporting her family of four in Toronto and Mexico City. She uses the following data, randomly gathered from 11 families in each city, and a level of significance of 0.05 to test this difference. She assumes that the annual cost is normally distributed. The data that she used is detailed below. Assume the pop variances are equal. (TTEST) Toronto Mexico $65.000. $64,000 $66,000 $64,900 $62,000 $60,500 $69.000 $64,500 $67,500 $64,500 $66,700 $68,000

Explain about the Mean Difference Score.

You are testing the claim that the proportion of men who own cats is larger than the proportion of women who own cats.You sample 180 men, and 75% own cats.You sample 100 women, and 60% own cats.Find the test statistic.

In 2016 the Better Business Bureau settled 84% of complaints they received in the United States. Suppose you have been hired by the Better Business Bureau to investigate the complaints they received this year involving new car dealers. You plan to select a sample of new car dealer complaints to estimate the proportion of complaints the Better Business Bureau is able to settle. Assume the population proportion of complaints settled for new car dealers is 0.84, the same as the overall proportion of complaints settled in 2016. Use the z-table. a. Suppose you select a sample of 200 complaints involving new car dealers. Show the sampling distribution of p. E(p) (to 2 decimals) (to 4 decimals) b. Based upon a sample of 200 complaints, what is the probability that the sample proportion will be within 0.04 of the population proportion (to 4 decimals)? probability : = c. Suppose you select a sample of 460 complaints involving new car dealers. Show the sampling distribution of p. E(F) (to 2…