The length of time needed to complete a certain test is normally distributed with mean 46 minutes and standard deviation 6 minutes. Find the probability that it will take less than 37 minutes to complete the test.

0.0668 or 6.68%

Step-by-step explanation:

Mean time (μ)= 46 minutes

Standard deviation (σ) = 6 minutes

The z-score for any given time X is determined by:

For X = 37:

A z-score of -1.5 corresponds to the 6.68th percentile of a normal distribution. The probability that it will take less than 37 minutes to complete the test is

The probability is 0.0668 or 6.68%

2

step-by-step explanation:

1+1=2

c.35

step-by-step explanation:

8+13=21

21+8=29

29+6=35