Question 20: find a 90% confidence interval for the average home price in the area. Consider 50 homes selling in an area. The average price of the 50 homesis $350,000 with a standard deviation $25,000. Find a 90% confidenceinterval for the average home price in the area.($344,184.56, $355,815.44)O ($343,070.48, $356,929.52)($344,072.50, $355,927.50)Cannot compute a confidence interval since we do not know if home prices arenormally distributed.

It is given that the sample mean is 350000. Sample standard deviation, s is 25000. The sample size,…

Answered: Consider 50 homes selling in an area.…

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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Now, let's imagine the poll that found that 52% of U.S. adults believe that the federal government has too much power. And let's say the poll was conducted via telephone interviews among 1010 U.S. adults and contained a margin of error of 2 percentage points at the 95% confidence level. Question 5 Use the information above to create an interval estimate for the proportion of all U.S. adults who believe that the federal government has too much power. %, I don't know %) You answered 4 out of 4 correctly. Asking up to 5. Last attempt
1. For a group of 10 students subjected to a stress situation the mean number of heartbeats/minutes was 126 and the standard deviation was 4. Find the 95% confidence interval for the true mean.
chapter 10 problem 16, I need help with the last part of this problem. thanks
Part 1 of 3 A researcher was investigating the size of math departments in Texas colleges. She believed the population standard deviation was 1.9. A sample of 42 colleges found their mean was 12.5. Find the 3-decimal small value of the 95% confidence interval of the mean. Part 2 of 3: Find the 3-decimal large value of the 95% confidence interval of the mean. Part 3 of 3: Find the 3-decimal margin of error
Solve the following. Show your complete solution. The in-city gasoline mileage per gallon was computed for two economy automobiles, each for 40 tanks of gasoline. The mean and standard deviation of the mile per gallon readings were given in the following table. Find a 90% confidence interval for the difference in mean miles per gallon for the two automobiles. Interpret your result.
QUESTION 23 Ali constructed a 98% confidence interval for the mean amount spent per day in a shopping mall based on 100 customers. The confidence interval was found to be (AED 1150, AED 2150). Select all correct answers. The mean amount spent per day by the 100 customers selected in the sample falls between AED 1150 and AED 2150. We are 98% confident that the mean amount spent per day by customers falls between AED 1150 and AED 2150. The mean amount spent per day by all customers falls between AED 1150 and AED 2150. 98% of all customers spent between AED 1150 and AED 2150 per day.
The empirical rule states that the percentage of observations in a data set (provided that the data set has a bell-shaped and symmetric distribution) that fall within one standard deviation of their mean is approximately 75%. TRUE OR FALSE
According to a poll, 81% of California adults (410 out of 506 surveyed) feel that education is one of the top issues facing California. We wish to construct a 90% confidence interval for the true proportion of California adults who feel that education is one of the top issues facing California.What is a point estimate for the true population proportion?
8.2 Question 3). According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft, Arkansas had 1,601 complaints of identity theft out of 3,482 consumer complaints ("Consumer fraud and," 2008). Calculate a 90% confidence interval for the proportion of identity theft in Arkansas.
Help with question 3 and 4
Question 4 く > You must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures: 32.6 -1.6 25.1 22.9 29.3 0.8 Find the 80% confidence interval. Enter your answer as an open-interval (i.e., parentheses) accurate to two decimal places (because the sample data are reported accurate to one decimal place). 80% C.I. =

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