3. A reporter for a student newspaper is writing an article on the cost of off-campushousing. A sample was selected of 10 one-bedroom units within a half-mile ofcampus and the rents paid. The sample mean is $550 and the sample standarddeviation is $60.05. Assume this population is normally distributed. What is the 95%confidence interval estimate of the mean rent per month for the population of one-bedroom units within a half-mile of campus?$487.05 to $612.95$507.05 to $592.95$477.05 to $622.95$497.05 to $602.95

Answered: Image /qna-images/answer/75a7767b-07ad-4f91-9fa4-92ba2def8cc7.jpg

Answered: 3. A reporter for a student newspaper…

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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4. At private college the achievement test is used for advanced study placement. Counselors selected a random sample of 144 students from the college and scored their tests by hand before sending them in for computer processing. For this sample, the mean was 450 and s = 29. Construct a 98% confidence interval for the mean.
Please help me with this question.
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.
. Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout. Suppose a friend tells you that the average length of trout caught in Pyramid Lake is ? = 19 inches. However, the Creel Survey reported that of a random sample of 49 fish caught, themean length was ?̅= 18.5 inches, with estimated standard deviation ? = 3.2 inches. Do these data indicate that the average length of a trout caught in Pyramid Lake is less than ? = 19 inches? Use ? = 0.05.a. Do we use a Normal or a Student’s t- distribution? Explain. How many degrees of freedom do we use?b. What are the hypotheses?
.
1) According to Consumer Expenditures, the average consumer spent $1729 on apparel and services in 2017. In 2018, a random sample of 36 consumers had a mean of $1667.11 and a standard deviation of $351.69. Can it be said that at the 5% level of significance that the mean level of consumption differed in 2018 with respect to 2017?
Sam is the manager of a used clothing store. He wants to estimate the average amount a customer spends per visit. A random sample of 70 customers’ receipts gave a mean of = $7.10 with a standard deviation s = $2.30. Find a 99% confidence interval for the average amount spent by all customers. Interpret your findings.
Assume that distances people driving to work are normally distributed. In a random sample of five people, the mean driving distance to work was 23 miles and the standard deviation was 6 miles. What is the length of the 95% confidence interval for the mean driving distance to work. Round to the nearest mile.
do the last one please
form a confidence interval for mean, proportion, and standard deviation.
For scenarios of statistical studies are given below. Decide which study uses a population parameter. And estimated 15% of Americans don't use the Internet. Lakeside family dentistry reported that six of the 15 patients who came in for regular cleaning one day had at least one cavity.
Define a. normally distributed variable.b. normally distributed population.c. parameters for a normal curve.

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