Question 5

8 Points

Sharon found that her research results were all normally distributed.She converted the results to Z-scores and needed assistance to find the probabilities for the following.

1. Find P (Z < 0.95)(1 Mark)
2. Find P (Z > -0.68)(2 Marks)
3. Find P (-1.25 < Z < 1.75)(2 Marks).

Sharon's co-researcher, Olive, had a different problem, she had probabilities that she needed help to convert to Z-scores.

1. The probability is 0.59 that Z is less than what number?(1Mark)
2. The probability is 0.74 that Z is greater than what number?(2Marks)