1.N = 85; average = 2.1, = 0.4, alpha= 0.05, Ho: <=2. We can conclude?

a.That the mean of the population is significantly less than 2

b.That the mean of the population is significantly greater than 85

c.That the mean of the population is significantly greater than 2

d.That the mean of the population is significantly greater than 0.4

2.N1 = 32, n2=27, mean1=12, mean2=7, s1=4, s2=3, a 95% interval estimate. The hypothesized value is?

3.If P(A) = 0.5, P(B) = 0.4, and P(A B) = 10; then P(A U B) = ?

4.The temperature at 5 football games played in Green bay ranged from -15 to -2 degrees below zero. The variance temperature of the 5 games

a.Will be negative

b.Must be atleast zero

c.Cannot be negative and positive

d.Cannot be calculated

5.N = 60; mean = 40, population standard deviation = 8; Confidence level (CL) = 85.4%, therefore x1 = ?; x2 = ?

6.N = 32, s = 0.09, the variance of the population is significantly more than 0.008. at 95% confidence, the test statistics is?

7.The mean of a standard normal probability distribution is always....

8.Mean = 7.6, time = 10, the probability that there are less than 3 occurences is

9.An observation is a set of measurements collected for an

a.Element

b.Column

c.Dataset

d.Variable

10.N1 = 65, n2 = 50, mean1 = 7.7, mean 2 = 7, 1 = 1.4, 2 = 1.1. the test statistic has a value of?

11.Suppose x is a normally distributed random variable with a mean of 16 and a standard deviation of 8. The probability that x is less than 15 P(x<15) is

12.N = 85; 70 favor student A, = 0.4, alpha = 0.05, Ho: p <= 0.76 We can conclude?

a.That the population that favors student A is not significantly greater than 85

b.That the population that favors Student A is significantly greater than 76%

c.That the population that favors Student A is not significantly greater than 76%

d.That the population that favors student A is not significantly greater than 70

13.In practice, the most frequently encountered hypothesis test about a population variance is a

a.One tailed test with rejection in the upper tail

b.Two tailed test with rejection in the lower tail

14.P = 0.09, n = 11; x = 5; the binomial probability P(x = 5) = ?

15.N = 21; sample mean = 15; sample standard deviation = 8; CL = 95%, therefore x1 = ?; x2 = ?

16.The manager stated that the average persons who shows up to her store is 45 persons per day. The correct set of hypotheses is?