A real estate agency says that the mean home sales price in City A is the same as in City B. The mean home sales price for 20 homes in City A is $127,426. Assume the population standard deviation is $25,876. The mean home sales price for 20 homes in City B is $112,274. Assume the population standard deviation is $27,113. At a = 0.01, is there enough evidence to reject the agency's claim? Complete parts (a) through (d) below. (b) Find the critical value(s) and identify the rejection region. Select the correct choice below and fill in the answer box within your choice. (Round to three decimal places as needed.) O A. The critical values are

A real estate agency says that the mean home sales price in City A is the same as in City B. The mean home sales price for 20 homes in City A is $127,426. Assume the population standard deviation is $25,876. The mean home sales price for 20 homes in City B is $112,274. Assume the population standard deviation is $27,113. At a = 0.01, is there enough evidence to reject the agency's claim? Complete parts (a) through (d) below. (b) Find the critical value(s) and identify the rejection region. Select the correct choice below and fill in the answer box within your choice. (Round to three decimal places as needed.) O A. The critical values are

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A real estate agency says that the mean home sales price in City A is the same as in City B. The mean home sales price for 20 homes in City A is $127,450. Assume the population standard deviation is $25,877. The mean home sales price for 20 homes in City B is $112,277. Assume the population standard deviation is $27,112. At a = 0.01, is there enough evidence to reject the agency's claim? Complete parts (a) through (d) below. O B. The mean home sales price in City A is greater than as in City B. O C. The mean home sales price in City A is less than in City B. O D. The mean home sales price in City A is not the same as in City B. Let City A be sample 1 and let City B be sample 2. Identify Ho and H. Ho: H1 = H2 Hai H1 H2 (b) Find the critical value(s) and identify the rejection region. Select the correct choice below and fill in the answer box within your choice. (Round to two decimal places as needed.) O A. The critical values are zo = + O B. The critical value is zo =
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The average expenditure on Valentine's Day was expected to be $100.89 (USA Today, February 13, 2006). Do male and female consumers differ in the amounts they spend? The average expenditure in a sample survey of 46 male consumers was $132.31, and the average expenditure in a sample survey of 37 female consumers was $63.58. Based on past surveys, the standard deviation for male consumers is assumed to be $33, and the standard deviation for female consumers is assumed to be $20. The z value is 2.576. Round your answers to 2 decimal places. a. What is the point estimate of the difference between the population mean expenditure for males and the population mean expenditure for females? b. At 99% confidence, what is the margin of error? c. Develop a 99% confidence interval for the difference between the two population means. to
A criminologist rode along with patrol officers for several weeks and recorded the number of minutes police officers spent interviewing witness at a variety of crime scenes. Using data collected on a group of 35 patrol officers, she observes an average interviewing time of 307 minutes. Assume that the population standard deviation a is estimated to be 83 minutes. What is the point estimate for the population mean, p? minutes Submit Question
A real estate company, We Rent Houses, regularly conducts survey for average rents in Tampa Bay Area. According to its latest survey, the sample mean rent in 2019 was $950 for Pasco County and $1160 in Hillsborough County. Assume the survey sampled rents for 160 rental units in each County. Also, assume the standard deviation in rents based on the survey was $175 in Pasco County and $230 in Hillsborough County. Compute the valued mannually. a. Calculate a 95% confidence interval for the population mean rent for Hillsborough County. Provide an interpretation of the confidence interval. b. Calculate a 95% confidence interval for the population mean for Pasco County. Interpret. c. Is it possible that the population mean rent in Pasco County is higher than that in Hillsborough County? Explain.
The USA Today reports that the average expenditure on Valentine's Day is $100.89. Do male and female consumers differ in the amounts they spend? The average expenditure in a sample survey of 45 male consumers was $135.67, and the average expenditure in a sample survey of 32 female consumers was $68.64. Based on past surveys, the standard deviation for male consumers is assumed to be $34, and the standard deviation for female consumers is assumed to be $20. What is the point estimate of the difference between the population mean expenditure for males and the population mean expenditure for females (to 2 decimals)? At 99% confidence, what is the margin of error (to 2 decimals)? Develop a 99% confidence interval for the difference between the two population means (to 2 decimals). Use z-table.( , )