(Answered) In a random sample ofnbsp50nbsprefrigerators the mean

Statistics

In a random sample of 50 ?refrigerators, the mean repair cost was ?$146.00 and the population standard deviation is ?$17.80.

Construct a 90?% confidence interval for the population mean repair cost. Interpret the results.

Construct a 90% confidence interval for the population mean repair cost.

The 90?% confidence interval is ( ? , ? ).

?(Round to two decimal places as? needed.)

Interpret you results. Choose the correct answer below.

A.With 90?% ?confidence, it can be said that the confidence interval contains the true mean repair cost.

B.With 90?% ?confidence, it can be said that the confidence interval contains the sample mean repair cost.

C.The confidence interval contains 90% of the mean repair costs.

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M93135464
Price:- $10

Verified Expert

Priced at $20 Now at $10, Verified Solution

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Parents who did not finish high school have sat math scores

Parents who did not finish high school have SAT math scores X with mean 451 and standard deviation 103. Scores Y of children of parents with graduate degrees have mean 567 and standard deviation 104. Perhaps we should st ...

An independent-measures study has one sample with n 10 and

An independent-measures study has one sample with n = 10 and a second sample with n = 15 to compare two experimental treatments. What is the df value for the t statistic for this study?

Lee smith imports paid a 100 per share annual dividend last

Lee Smith Imports paid a $1.00 per share annual dividend last week. Dividends are expected to increase by 5% annually. What is one share of this stock worth to you today if the appropriate discount rate is 14%? a. $7.14 ...

Need help with calculating these problems a research group

Need help with calculating these problems: A research group conducted an extensive survey of 2957 wage and salaried workers on issues ranging from relationships with their bosses to household chores. The data were gather ...

1 according to the latest poll 750 adult respondents

1. According to the latest poll, 750 adult respondents believe in global warming. Construct a 95% confidence interval estimate of the proportion of adults who believe in global warming. Round your lower bound and upper b ...

Hayley motorcycle company just paid a dividend of 14 today

Hayley Motorcycle Company just paid a dividend of $1.4 today, and is expected to pay a dividend in year 1 of $1.8, a dividend in year 2 of $2.3, a dividend in year 3 of $2.9, and a dividend in year 4 of $3.8. After year ...

A survey found that people keep their televisions an

A survey found that people keep their televisions an average of 5.8 years. The standard deviation is 0.76 year. If a person decides to buy a new TV, find the probability that he or she owned the old one for the given amo ...

Military often provides a form of qualification test for

Military often provides a form of qualification test for people to enter special career fields. Suppose that a large number of people have taken a test for a certain career field. Suppose that the mean of all people taki ...

Breeding records reveal that 1 out of every 8 puppies of a

Breeding records reveal that 1 out of every 8 puppies of a certain Welsh Corgi female are runts. Since these puppies can't be sold for full price, we wish to examine the frequency with which this condition is likely to o ...

Suppose that the waiting time for a pizza to be delivered

Suppose that the waiting time for a pizza to be delivered to an individual's residence has been found to be normally distributed with a mean of 30 minutes and a standard deviation of 8 minutes. What is the probability th ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert