Calculate the student's GPA. Round to the nearest hundredth.
GPA: 2.82
15
Construct a box-and-whisker diagram with the following list of data: 56, 78, 46, 83, 45, 67, 49, 68, 73, 85, 59, 56, 79, 48, 65, 42, 61, 83, 76, 51 (n=20)
Min: 42, Q1: 50, Median: 63, Q3: 77, Max: 85
15
Construct a frequency distribution of the 20 brain volumes (cm3) listed below. Use the classes 900-999, 1000-1099, etc. What is the class width? What are the midpoints? What are the class boundaries?
Class width: 100 Midpoints: 949.5, 1049.5, 1149.5, 1249.5, 1349.5, 1449.5 Boundaries: 898.5-999.5, 999.5-1099.5, etc.
15
If 1 of the subjects is randomly selected, find the probability of selecting someone who entered a plea of not guilty or was not sentenced to prison.
0.619
15
Find the probability of randomly selecting 1 of the 839 challenges and getting a challenge that was accepted and was made by a female player.
126 / 839 or 0.150
15
Find the probability of randomly selecting 1 of the 839 challenges and getting a challenge that was accepted, given that it was made by a female player.
126 / 350 or 0.360
15
Assume that the percentage of people in a population have the following color eyes: 40% brown, 35% blue, 12% green, 7% gray, 6% hazel. If two people are randomly selected, what is the probability that at least one of them has brown eyes?
0.64
15
Using the following sample data, find the z score corresponding to the eye height of 1642 mm. Is it unusual? Why/why not? :: 1550, 1642, 1538, 1497, 1571
z = 1.54 :: This is not unusual because the value falls between 2 standard deviations of the mean
15
A fan of Lady Antebellum music plans to make a custom CD with 12 of their 27 songs. How many different combinations of 12 songs are possible? Is it practical to make a different CD for each possible combination?
17,383,860. Not practical
15
A presidential candidate plans to visit the capitals in 4 of the 50 states. What is the probability that she selects the route of Sacramento, Albany, Juneau, and Hartford? Is it practical to list all of the different possible routes?
1 / 5,527,200. No, there are too many possibilities - it is not practical.
15
Solve:
1.2¢
15
Solve:
$315,075. The offer is well below the expected value, so she should continue
15
If boys and girls are equally likely, groups of 400 births have a mean of 200 girls and a standard deviation of 10 girls. Is 232 girls in 400 births an unusually high number of girls?
Yes
15
What value has a probability of 0.3782 if the mean is 0 and the standard deviation is 1? What type of distribution is this?
Z = -0.31
15
If 49 adult females are randomly selected, find the probability that they have a mean overhead reach less than 207.0 cm.
0.8888 (tech: 0.8889)
15
If 1 adult female is randomly selected, find the probability that they have a mean overhead reach less than 205.0 cm.