Question 6Your answer is CORRECT.Identify the most appropriate test to use for the following situation:A national computer retailer believes that the average sales are greater for salespersons with a collegedegree. A random sample of 14 salespersons with a degree had an average weekly sale of $3542 last year,while 17 salespersons without a college degree averaged $3301 in weekly sales. The standard deviationswere $468 and $642 respectively. Is there evidence to support the retailer's belief?
a) Two sample ztest for meansb) Two sample ztest for proportionsc) Two sample ttest for meansd) One sample ztest for proportionse) One sample ttest for meansf) Matched pairs ttest for meansg) One sample ztest for means
Question 7Your answer is CORRECT.A random sample of 169 cans of fruit nectar is drawn from among all cans produced in a run. Priorexperience has shown that the distribution of the contents has a mean of 12.11 ounces and a standarddeviation of 2.11 ounce. What is the probability that the average contents of the 169 sample cans is less than11.86 ounces?
Question 8Your answer is CORRECT.A random variable Xhas a probability distribution as follows:

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X
0
1
2
3
4
P(
X
)
3
k
2
k
2
k
2
k
2
k
What is P(X < 2)?
a)
b)
c)
d)
e)
Cannot be determined.
Question 9
Your answer is CORRECT.
Find a value of so that
.
a)
b)
c)
d)
e)
Question 10Your answer is CORRECT.The following table displays the results of a sample of 100 in which the subjects indicated their favorite icecream of three listed. The data are organized by favorite ice cream and age group. What is the probabilitythat a person chosen at random will be between 20 and 40 years old if he or she favors vanilla?Age Chocolate Vanilla Strawberry Over 40 12 7 20-40 15 8 Under 20 12 17
11
12
6

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