Quiz scores are normally distributed with a mean of 72 points and a standard deviation of 8 points.

Round results to four decimal places.

Choose an individual quiz, and find the probability that ...

a. The individual quiz score is less than 70 points,

P( x < 70) =

b. The individual quiz score is greater than 85 points,

P( x > 85 ) =

Choose a sample of 16 quizzes, and find the probability that...

c.The sample mean of the quizzes is less than 70 points,

LaTeX: P( \bar{x} < 70 ) P ( x < 70 )=

d. The sample mean of the quizzes is at least 85 points,

LaTeX: P( \bar{x} > 85 ) P ( x > 85 )=

Could you tell me how to use the Excel to do that