Question 1

A jar contains 58 blue marbles and 37 green marbles.

1. If you randomly select a marble from the jar, what is the probability that you will get a blue marble?

a. Write out the fraction representing the probability.

b. Write the probablility as a decimal or a percent.

2. If you are selecting a random sample of n=5 marbles and the first 4 marbles are all blue, what is the proability that the fifth marble will be green?

a. Write out the fraction representing the probability.

b. Write the probablility as a decimal or a percent.

Question 2

For a normal distribution of μ=534.00 and standard deviation σ =108.00â€¨

1. What is the percentile rank for X = 412?

a. z = ?

b. Percentile rank = ?

2. What is the percentile rank for X = 726?

a. z = ?

b. Percentile rank = ?

Question 3

A normal distribution has a mean of μ=168.00 and standard deviation σ =14.00. Find the following values.

1. The 33rd percentile.

a. What z-score value will you use?

b. 33rd percentile = ?

2. The 76th percentile.

a. What z-score value will you use?

b. 76th percentile = ?

Subject | Mathematics |

Due By (Pacific Time) | 07/05/2014 12:00 am |

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