developer

Suppose that a polygraph is​ 90% accurate​ (it will correctly detect​ 90% of people who are lying and it will correctly detect​ 90% of people who are telling the​ truth). The

Hello I need to see the work and formulas please Question 5 What is the estimated 95% confidence interval (CI) of the difference in proportions between schoolchildren and adults developing nausea and vomiting following holiday parties? Assign groups 1 and 2 to be schoolchildren and adults, respectively. Please note the following: 1) in practice, you as the analyst decide how to assign groups 1 and 2 and subsequently interpret the results appropriately in the context of the data, though for the purposes of this exercise the groups are assigned for you; 2) 0 and 1 are defined as no and […]

In a survey of a group of​ men, the heights in the​ 20-29 age group were normally​ distributed, with a mean of 69.3 inches and a standard deviation of 4.0 inches. A study participant is randomly selected. Complete parts​ (a) through​ (d) below.​(a) Find the probability that a study participant has a height that is less than 65 inches.

In a test of the hypothesis H0: μ=10 versus  Ha: μ≠10 a sample of n=50 observations possessed mean =10.7 and standard deviation s =2.6. Find and interpret the​ p-value for this test. A.There is sufficient evidence to reject H0 for α >0.06 B.There is insufficient evidence to reject H0 α=0.15. C.There is sufficient evidence to reject H0 for α <0.06.

An automobile manufacturing plant produced 29  vehicles today: 9 were sedans, 10 were vans, and 10 were trucks. Plant managers are going to choose two of these vehicles for thorough inspection. The first vehicle will be chosen at random, and then the second vehicle will be chosen at random from the remaining vehicles. What is the probability that two vans will be selected?