Question

25a. Find the z-score that corresponds to a speed of 70 mph. The mean is 80...

25a. Find the z-score that corresponds to a speed of 70 mph. The mean is 80 mph and the standard deviation of 4 mph.

a. -2.1 b.-2.2 c.-2.3 d. -2.5

25b. For a probability experiment of rolling a 9-sided die, find the sample space, give an example of a simple event, give an example of an outcome, give an example of a non-simple event. Find the probability of a simple event. Find the probability of the non-simple event. Label each.

A. How many elements are there in the sample space?

a.

9
b.

10
c.

11
d.

12

25c. B. Which one is a possible simple event for this problem?

a.

0
b.

4
c.

10
d.

12

25d. Construct a time series chart for the following data; (Year, Pounds of mail): (2000,4), (2001,2), (2002, 5), (2003,3), (2004,2). What is the highest y-value?

a. 3

b. 4

c. 5

d.6
Math   Statistics-And-Probability   
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