Step 1: plug in the numbers. 7(6)-4
Step 2 multiply 7x6 42-4
Look at the tenth's place. (:
Answer:0,1
Step-by-step explanation:
1 is the number in the x column that is in the same area as 0 they r vertical to each other
Answer:
99
Step-by-step explanation:
The mean = 90 days
standard deviation = 20 days
P(Z < z) = 68 %
getting the value of z-score from the standard normal table of 0.68
z = 0.47
P(Z < 0.47) = 0.47 * 20 + 90 = 99