D Question 14 1 pts For questions 14 through 23, refer to the following problem: The realtor had noticed some recent changes in the sales prices for single-family homes in two cities in her county. City A and City B had always had similar home prices in the past, but recently she had noticed that this might be changing. She decided to use hypothesis testing to see if the population mean home price was different in these two cities. The realtor took two random, independent samples. In City A, a random sample of 30 single-family home sales had a mean sales price of $193,000. In City B, a random sample of 35 single-family home sales had a mean sales price of $175,000. From past experience, the realtor knew that the population standard deviation of home sales prices was $72,050 in City A, and $51,000 in City B. Using an a = 0.01 significance level, perform a hypothesis test to determine whether the population mean home sales price in City A is different than City B. Use the home sales in City A as population 1. What is n2? O 35 O $175,000 O City B 30D Question 17 1 pts What is the test statistic? (if it is z, round to two decimals; if it is t, round to three decimals) O ttest = 1.174 O Ztest = 1.14 O Ztest = 1.17 O ttest = 1.144 D Question 18 1 pts What Critical Value(s) should be used in this case? 2.402 O 2.326 O +2.576 O +2.676 D Question 19 1 ptsD Question 15 1 pts 1 and 2 are [Select ] D Question 16 1 pts What are the hypotheses? O Ho : M1 - 12 5 0 HA : MI - 12 > 0 O Ho: /1 - M2 = 0 HA : 141 - H2 # 0 O Ho : P1 - P2 = 0 HA : P1 - P2 # 0 O Ho : $1 - $2 = 0 HA : $1 - 2 7 0 D Question 17 1 pts MacBook ProD Question 19 1 pts What is your conclusion? Accept Ho. HA is unsupported. Reject Ho and accept HA. Do not reject Ho. HA is unsupported. Do not reject Ho. Accept HA. D Question 20 1 pts At the a = 0.01 significance level, the realtor [ Select ] conclude that the population mean home sales price in City A [ Select ] City B. D Question 21 1 pts Using the information in the problem above, calculate a 95% confidence interval for the difference between the population mean home sales prices for City A and City B.31580.8272 O 25871.7434 D Question 22 2 pts What is the 95% confidence interval? (Round to the nearest whole number). O [-7872,43872] O [-8344,44344] [-13581,49581] [-12826,48826] D Question 23 1 pts With 95% confidence, we can say that: the population mean prices in City A and City B are the same. there is no statistically significant difference between the population mean prices in City A and City B there is a statistically significant difference between the population mean prices in City A and City B MacBook ProQuestion 21 1 pts Using the information in the problem above, calculate a 95% confidence interval for the difference between the population mean home sales prices for City A and City B. What is the margin of error? 26343.5685 30825.9070 31580.8272 25871.7434 D Question 22 2 pts What is the 95% confidence interval? (Round to the nearest whole number). O [-7872,43872] [-8344,44344] [-13581,49581] O [-12826,48826] D Question 23 1 pts