A population of values has a normal distribution with μ
. You intend to draw a random sample of size n
Find the probability that a single randomly selected value is greater than -7.5.
P(X > -7.5) =
Find the probability that a sample of size n
is randomly selected with a mean greater than -7.5.
P(M > -7.5) =
Enter your answers as numbers accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
P ( X > -7.5) = Z=(X-μ)/σ =(-7.5-12.1)/30.3 =-0.647 From normal distribution tables =0.2578(this is for area to the... View the full answer