Provide an appropriate response. The ages of five randomly chosen cars in a parking garage are determined to be 7, 9, 3, 4, and 6 years old. If we consider this sample of 5 in groups of 3, what is the probability of the population mean being more than 6 years?

2. In a population it is estimated that 20% have a desired trait of interest for the researcher. The researcher wants to know how many people on average he has to draw from a population to get 2 people with the trait. Use rows 20-24 of the Random Number Table to carry out the simulation. Explain clearly how you set up the problem and report your findings. Answer:

Determine how many possible values there are for the following discrete random variable: sum of your next roll of two die. Select one: a. 6 b. 11 C. 12 O d. 36

4.The mortality rate for a certain disease is 25%. A random sample of twelve patients with this disease is selected. a.What is the probability that exactly half of the patients selected will die from the disease? b.What is the probability that at least two of the twelve patients will die from the disease?

AP Statistics Chapter 5 Review Name: Date: Period: 1) Approximately 13% of people are left-handed. a) If you choose 10 people at random, what is the probability none of them are left-handed? b) Describe a plan to simulate choosing 10 people at random and counting the number that are left-handed by using Table D in your textbook. c) Run 5 repetitions of this simulation and record the results below. What is the average number of left-handed people you selected in each repetition?

The following table shows the distribution of murders by type of weapon for murder cases in a particular country over the past 12 years. Complete parts (a) through (e). (b) What is the probability that a randomly selected murder resulted from a rifle or shotgun? (Type a decimal rounded to three decimal places as needed.) P(rifle or shotgun) = Interpret this probability. Select the correct choice below and fill in the answer box to complete your choice. OA. If 1000 murders were randomly selected, exactly of them would have resulted from a rifle or shotgun. B. If 1000 murders were randomly selected, we would expect about of the to have resulted from a rifle or shoto (c) What is the probability that a randomly selected murder resulted from a handgun, rifle, or shotgun? P(handgun, rifle, or shotgun) = (Type a decimal rounded to three decimal places as needed.) Interpret this probability. Select the correct choice below and fill in the answer box to complete your choice. OA. If 1000 murders…

You want to assess the differences in frequency counts for four different groups. You know there are 150 people total. Without any additional information about how the data is distributed, what would you use for the "expected frequency" in each group?     a.1/4 b.37.5 c.25 d..375

A small liberal arts college in the Northeast has 350350 freshmen. Seventy of the freshmen are education majors. Suppose fifty freshmen are randomly selected (without replacement).   Step 1 of 2:  Find the expected number of education majors in the sample. Round your answer to two decimal places, if necessary.

2. A dance crew of 12 is to be randomly selected from 11 hip-hop dancers, 9 ballet dancers, 13 ballroom dancers and 7 break dancers. What is the probability of having 5 ballet dancers on the dance crew?