Find the probability that a single randomly selected value is between 103.9 and

Question

Find the probability that a single randomly selected value is between 103.9 and 107.2. P(103.9<X<107.2)= _________
Find the probability that a sample of size n=78 is randomly selected with a mean between 103.9 and 107.2. P(103.9<M<107.2)= _________ P(103.9<M<107.2)= _________
Enter your answers as numbers accurate to 4 decimal places. Answers obtained using exact z-scores rounded to 3 decimal places are accepted.
58.8. You intend to draw a random sample of size A population of values has a normal distribution with = 85.9 and n=78. Find the probability that a single randomly selected value is between 103.9 and 107.2 P(103.9

Explanation / Answer

1)

(try 0.0211 if above does not work due to rounding)

2)

for normal distribution z score =(X-)/

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