QuickHelper

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Category > Accounting Posted 29 Aug 2017 My Price 11.00

7 questions, The prices in dollars for a particular model of camera are shown below for 10 online retailers, statistics homework help

Question description

 

8. The prices in dollars for a particular model of camera are shown below for 10 online retailers. Estimate the true mean price for this particular camera with 95% confidence. Assume normal distribution. 225, 240, 215, 206, 211, 210, 193, 250, 225, 202. Please round to the nearest tenth and write your answer in the form ( , ); for example (31,34) or (25,46). Do not type in any extra spaces.

9. Assume that we want to construct a confidence interval. Determine whether you should use the t-distribution or the normal distribution to find it, based off of the following information. In this problem, let n be the sample size. n = 23, the standard deviation is unknown, the population appears to be normally distributed

o T-Distribution

o Normal Distribution

o neither of the methods studied by us can be used

10. Assume that we want to construct a confidence interval. Determine whether you should use the t-distribution or the normal distribution to find it, based off of the following information. In this problem, let n be the sample size.

n = 200, the standard deviation is 15, the population appears to be skewed

T-Distribution

Normal Distribution

neither of the methods studied by us can be used

11. Assume that we want to construct a confidence interval. Determine whether you should use the t-distribution or the normal distribution to find it, based off of the following information. In this problem, let n be the sample size.

n = 5, the standard deviation is known, the population appears to be very skewed

neither of the methods studied by us can be used

Normal Distribution

t-distribution

12. Assume that we want to construct a confidence interval. Determine whether you should use the t-distribution or the normal distribution to find it, based off of the following information. In this problem, let n be the sample size n = 200, the standard deviation is unknown, the population appears to be normally distributed

T-Distribution

Normal Distribution

13. A university of dean of students wishes to estimate the average number of hours students spend doing homework per week. The standard deviation from a previous study is 6.2 hours. How large a sample must be selected if he wants to be 99% confident of finding whether the true mean differs from the sample mean by 1.5 hours?

14. If the variance of a national accounting examination is 900, how large a sample is needed to estimate the true mean score within 5 points with 99% confidence?

Answers

QuickHelper
(10)
Status NEW Posted 29 Aug 2017 06:08 AM My Price 11.00

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