The mean number of rushing yards for one NFL team was less than 105 yards per game. If a hypothesis test is performed, how should you interpret a decision that rejects the null hypothesis?
A) There is sufficient evidence to support the claim < 105.
B) There is sufficient evidence to reject the claim < 105.
C) There is not sufficient evidence to reject the claim < 105.
D) There is not sufficient evidence to support the claim < 105.
Q. 2A club elects a president, vice-president, and secretary-treasurer. How many sets of officers are possible if there are 13 members and any member can be elected to each position? No person can hold more than one office.
A) 1716 B) 858 C) 572 D) 17,160
Q. 3Describe the shape of the histogram. The data set: age of 20 household stereo systems randomly selected from a neighborhood 12 6 4 9 11 1 7 8 9 8 9 13 5 15 7 6 8 8 2 1
A) symmetric B) uniform
C) skewed to the left D) skewed to the right
Q. 4Parking at a large university has become a very big problem. University administrators are interested in determining the average parking time (e.g. the time it takes a student to find a parking spot) of its students.
An administrator inconspicuously followed 100 students and carefully recorded their parking times. Identify the sample of interest to the university administration. A) parking times of the 100 students B) parking time of a student
C) location of the parking spot D) type of car (import or domestic)
Q. 5Suppose x is a random variable for which a Poisson probability distribution with ? = 10 provides a good characterization. Find s for x.
A) 3.16 B) 10 C) 5 D) 100
Q. 6A man has 12 coins that consist of 3 pennies, 4 nickels, and 5 quarters. How many distinct arrangements of the coins can he make if he lays them in a row one at a time?
A) 27,720 B) 479,001,600 C) 9240 D) 83,160
Q. 7Describe the shape of the histogram. The data set: Pick-Three lottery results for 10 consecutive weeks 3 6 7 6 0 6 1 7 8 4 1 5 7 5 9 1 5 3 9 9 2 2 3 0 8 8 4 0 2 4
A) uniform B) symmetric
C) skewed to the left D) skewed to the right
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