Question

In: Statistics and Probability

The random sample shown below was selected from a normal distribution. 3​, 6​, 5​, 9​, 9​,...

The random sample shown below was selected from a normal distribution. 3​, 6​, 5​, 9​, 9​, 4 Complete parts a and b.

a. Construct a 95​% confidence interval for the population mean mu.

b.Assume that the sample mean x and sample standard deviation s remain the same as those you just calculated but that are based on a sample of n=25 observations. Repeat part a. What is the effect of increasing the sample size on the width of the confidence intervals?

Solutions

Expert Solution

Solution of your question is given below.

Please rate the answer if you are satisfied. Thank you:)

orchestra answered 2 years ago
Next > < Previous

Related Solutions

The random sample shown below was selected from a normal distribution. 3, 5, 9, 4, 6,...
The random sample shown below was selected from a normal distribution. 3, 5, 9, 4, 6, 9 Complete parts a and b. A. Construct a 95% confidence interval for the population mean μ . (___,___) B. Assume that sample mean x and sample standard deviation s remain exactly the same as those you just calculated but that are based on a sample of n = 25 observations. Repeat part a. What is the effect of increasing the sample size on...
The random sample shown below was selected from a normal distribution. 8​, 9​, 6​, 5​, 5​,...
The random sample shown below was selected from a normal distribution. 8​, 9​, 6​, 5​, 5​, 3 Complete parts a and b. a. Construct a 99​% confidence interval for the population mean mu. left parenthesis nothing comma nothing right parenthesis ​(Round to two decimal places as​ needed.) b. Assume that sample mean x overbar and sample standard deviation s remain exactly the same as those you just calculated but that are based on a sample of nequals25 observations. Repeat part...
The following random sample was selected from a normal distribution: 4, 6, 3, 5, 9, 3....
The following random sample was selected from a normal distribution: 4, 6, 3, 5, 9, 3. a. Construct a 90% confidence interval for the population mean. b. Construct a 95% confidence interval for the population mean. c. Construct a 99% confidence interval for the population mean. d. Assume that the sample mean x and sample standard deviation s remain exactly the same as those you just calculated but are based on a sample of n = 25 observations rather than...
The following random sample was selected from a distribution: 4, 6, 3, 5, 9, 3. The...
The following random sample was selected from a distribution: 4, 6, 3, 5, 9, 3. The standard deviation for the sample is 2.2804. Construct a 99% confidence interval for population mean .
Question #3. A random sample of n = 9 is selected from a normal distribution with...
Question #3. A random sample of n = 9 is selected from a normal distribution with μ = 80 and σ=12. What is the probability that the sample mean will be between 75 and 86? Report to the thousandths Question #4. A random sample of n= 4 is obtained from a normal distribution μ= 30,σ= 8. What is the probability the sample mean will be smaller than M = 22? Report to the thousandths Question #5. A random sample of...
The random sample shown below was selected from a normal distribution. 1010​, 44​, 77​, 66​, 77​,...
The random sample shown below was selected from a normal distribution. 1010​, 44​, 77​, 66​, 77​, 22    Complete parts a and b. a. Construct a 9595​% confidence interval for the population mean muμ. left parenthesis nothing comma nothing right parenthesis3.113.11,8.898.89 ​(Round to two decimal places as​ needed.)b. Assume that sample mean x overbarx and sample standard deviation ss remain exactly the same as those you just calculated but that are based on a sample of nnequals=2525 observations. Repeat part...
Suppose you have selected a random sample of n =5 measurements from a normal distribution. Compare...
Suppose you have selected a random sample of n =5 measurements from a normal distribution. Compare the standard normal z values with the corresponding t values if you were forming the following confidence intervals. (a)    8080% confidence interval z= t= (b)    9898% confidence interval z= t= (c)    9595% confidence interval z= t= ConfidenceIntervals
The following random sample was selected from a normal distribution 3.5, 5.4, 1.3, 1.8, 4.3 then...
The following random sample was selected from a normal distribution 3.5, 5.4, 1.3, 1.8, 4.3 then the 95% confidence interval to estimate the population of the mean. I am having a tough time calculating I feel I just need an idea how to calculate this type of scenario homework properly.
Suppose you have selected a random sample of ?=13 measurements from a normal distribution. Compare the...
Suppose you have selected a random sample of ?=13 measurements from a normal distribution. Compare the standard normal z values with the corresponding t values if you were forming the following confidence intervals. a)    80% confidence interval ?= ?= (b)    90% confidence interval ?= ?= (c)    99% confidence interval ?= ?=
The data resulting from a random sample of 5 observations are shown below. Y is the...
The data resulting from a random sample of 5 observations are shown below. Y is the dependent variable, and X1 and X2 are the independent variables. Observation Y X1 X2 1 87 95 11 2 86 94 11 3 84 94 11 4 83 93 12 5 84 93 12 Use Excel's Regression tool to answer the following questions. To copy the data set, highlight the table, press Ctrl-c, click on the Excel cell to which you want to copy,...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT