1	A normal distribution has a mean u = 15.2 and a standard deviation of = 0.9. Find the probability that a score is greater than 16.1
A	0.8413
B	0.1587
C	0.1357
D	0.1550
2	A normal distribution has a mean u = 67.3 and a standard deviation of = 9.3 Find P81, which separates the bottom 81% from the top 19% .
A	0.29
B	0.88
C	70.0
D	75.5
3	Assume the women have heights that are normally distributed with a mean of 63.6 inches and a standard deviation of 2.5 inches. Find the value of the quartile Q3
A	66.1
B	67.8
C	65.3
D	64.3

4	The weights of certain machine components are normally distributed with a mean of 8.08 g and a standard deviation of 0.1 g. Find the TWO weights, one to separate the top 3% and the other to separate the bottom 3% .
A	8.03 and 8.13
B	7.89 and 8.27
C	7.86 and 8.35
D	8.06 and 8.10
5	The statistic, s, is a good estimate for:
A	u
B
C
D
6	How is the dispersion of a Normal distribution compare to the dispersion of a T - distribution,
A	Normal Distribution is more dispersed than the T distribution
B	Normal Distribution is less dispersed than the T distribution
C	Normal Distribution is dispersed in the same way as the T distribution

7	As the significance level decreases the chances of reject Ho increases
A	True
B	False
C	Stays the same
D	No relationship between the two statistics

8	The expected result of a hypothesis test are calculated under the assumption that the Null Hypothesis is which of the following:
A	False
B	True
C	Depends on alpha level given
9	When a directional hypothesis is being tested and the rejection region is on the right side of the mean, then the alternate hypothesis must be of the form:
A	Less than
B	Greater than
C	Not equal
D	Equal

10- 18	Goodmoon Radial Tires CO. claims it's tires last 30,000 miles. You believe that is an over-estimate. You draw a sample of 61 tires and find the mean to be 29,995 miles with a standard deviation of 16. (Use a significance level of .05)
10	What would be the Null Hypothesis?
A	= 29,995
B	< 30,000
C	= 64
D	> 29,995
E	= 30,000
11	What is the Alternate Hypothesis?
A	= 29,995
B	x < 30,000
C	> 30,000
D	< 30,000
E	U = 30,000
12	What is the variance of the sample?
A	30,000
B	29,995
C	4096 16
D	256
E	16

13	What is the sample mean outcome?
A	30000
B	29,995
C	64
D	16
E	2
14	What is the Distribution of Sample Means (DSM) Standard deviation?
A	2 .05
B	16
C	61
D	3750
E	7250
15	What is the degrees of freedom?
A	15
B	16
C	60
D	61
E	62

16	What is the value of the critical cut off score?
A	+ 1.75
B	-1.67
C	+2.00
D	-2.43
E	-2.66

+

17	What is the values of the computed test statistic?
A	0.0325
B	1.25
C	.63
D	1.67
E	2.44
18	What is the final decision?
A	Do Not Reject Ho
B	Do Not Reject Ha
C	Reject Ho
D	Reject Ha
E	Neither reject or Do not reject, since it is a tie.

19	If a False Ho is found not to be rejected then what type of error might have been made?
A	Type 1 error
B	Type II error
C	Type III error
D	False error
E	True error

20 -29	In 1996, the average monthly credit card balance for a population of VISA cardholders was $791, with a standard deviation of $279. It was believed that the average balance was expected to be higher in 1997. To prove that belief, a sample of 423 accounts in this population had an average balance of $831. Does this support the hypothesis that the average balance increased? (Use = 5%)

20	What is the Null Ho, Hypothesis?
A	= 791
B	> 831
C	= 1996
D	> 791
E	= 831
21	What is the Alternate Hypothesis?
A	= 831
B	x < 791
C	> 831
D	> 791
E	U = 791