Mathematics, 21.02.2020 22:01 mckeeshallea400
Suppose that a committee is studying whether or not there is waste of time in our judicial system. It is interested in the mean amount of time individuals waste at the courthouse waiting to be called for jury duty. The committee randomly surveyed 81 people who recently served as jurors. The sample mean wait time was 8 hours with a sample standard deviation of 4 hours. a.
i. x¯= 8
ii. sx = 4
iii. n = 81
iv. n – 1 = 80
b. Define the random variables X and X¯in words. X is amount of time individuals waste at the courthouse waiting to be called for jury duty. X- is mean amount of time that sample of 81 people who recently served at jurors.
c. Which distribution should you use for this problem? Explain your choice.
d. Construct a 95% confidence interval for the population mean time wasted.
i. State the confidence interval.
ii. Sketch the graph.
iii. Calculate the error bound.
e. Explain in a complete sentence what the confidence interval means.
Answers: 3
Mathematics, 21.06.2019 19:50
Raj encoded a secret phrase using matrix multiplication. using a = 1, b = 2, c = 3, and so on, he multiplied the clear text code for each letter by the matrix to get a matrix that represents the encoded text. the matrix representing the encoded text is . what is the secret phrase? determine the location of spaces after you decode the text. yummy is the corn the tomato is red the corn is yummy red is the tomato
Answers: 2
Mathematics, 22.06.2019 01:00
Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay
Answers: 1
Suppose that a committee is studying whether or not there is waste of time in our judicial system. I...
Computers and Technology, 11.01.2020 01:31
Business, 11.01.2020 01:31
Chemistry, 11.01.2020 01:31
Chemistry, 11.01.2020 01:31