1)Assume that the speed of automobiles on an expressway during rush hour is normally distributed with a mean of 61 mph and a standard deviation of 5 mph. What percent of cars are traveling faster than 65 mph?

Question: The percentage of cars traveling faster than 69 mph is?

2)Assume the annual day care cost per child is normally distributed with a mean of 60000$ and a standard deviation of $1400. What percent of day care costs are more than $8700 annually?

3)Use the standard normal distribution table to determine the percent of data between z=0.13 and z=2.09.

4)Use the standard normal table to find the area to the left of z=2.62.

5)

Determine the equation of the line of best fit from the data in the table.	x	y
100	2
90	4
60	6
60	8
50	9
30	14

The equation of the line of best fit is y=?