# Problem Set G.docx - Problem Set G Question 1 What's wrong...

• 9

This preview shows page 1 - 3 out of 9 pages.

Problem Set G Question 1What's wrong with the following statement? "Because the digits 0, 1, 2, . . . , 9 are the normal results from lottery drawings, such randomly selected numbers have a normal distribution."Choose the correct answer below. A. The lottery digits have a normal distribution only if the digits are drawn with replacement, which is not specified.B. Since the probability of each digit being selected isequal, lottery digits have a uniformdistribution, not a normal distribution.C. The lottery digits have a normal distribution only if the digits are drawn without replacement, which is not specified.D. It is not the randomly selected digits that have a normal distribution but rather the chances of winning the lottery. Question 2A normal distribution is informally described as a probability distribution that is "bell-shaped" when graphed. Draw a rough sketch of a curve having the bell shape that is characteristic of a normal distribution.Choose the correct answer below. Question 3What requirements are necessary for a normal probability distribution to be a standardnormal probability distribution?Choose the correct answer below. .... Question 4What does the notation zαindicate? Question 5The waiting times between a subway departure schedule and the arrival of a passenger are uniformly distributed between 0 and 5 minutes. Find the probability that a randomly selected passenger has a waiting time greater than 3.25 minutes. (Simplify your answer. Round to three decimal places as needed.)
Height=15=0.2minutesThe probability that a randomly selected passenger has a waiting time greater 5.25 is:p(greater than3.25)=Widthof the selectes area×height=1.75×0.2=0.35p(greater than3.25)=¿0.35 Question 6Find the area of the shaded region. The graph depicts the standard normal distribution with mean 0 and standard deviation 1.(Round to four decimal places as needed.) Question 7Find the area of the shaded region. The graph depicts the standard normal distribution of bone density scores with mean 0 and standard deviation 1.(Round to four decimal places as needed.) = 1
• • • 