Question

1) Let x = red blood cell (RBC) count in millions per cubic millimeter of whole blood. Suppose that for healthy females, x has an approximately normal distribution with mean μ = 4.8 and standard deviation σ = 0.3 Convert the following x interval from a laboratory test to a z interval.

3.9 < x < 5.4

Select one:

a. 13.00 < z < 18.00

b. 2.00 < z < 13.00

c. -3.00 < z < 2.00

d. 13.00 < z < 34.00

e. -3.00 < z < 18.00

2)

Suppose a certain species of fawns between 1 and 5 months old have a body weight that is approximately normally distributed with mean $ppg__cognero__Chapter6_Bank__media__027d$ kilograms and standard deviation $ppg__cognero__Chapter6_Bank__media__af51$ kilograms. Let x be the weight of a fawn in kilograms. Convert the following x interval to a z interval. Round to the nearest hundredth.

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x<42.6

Select one:

a. z<16.33

b. z>16.33

c. z<3.95

d. z<-16.33

e. z>-16.33

3)

The heights of 18-year-old men are approximately normally distributed with mean 68 inches and standard deviation 3 inches. What is the probability that the average height of a sample of twenty 18-year-old men will be less than 69 inches? Round your answer to four decimal places.

Select one:

a. 0.4032

b. 0.8064

c. 0.4516

d. 0.0968

e. 0.9032

Answer 1