Question

1.Suppose X is a random variable that is normally distributed with mean 5 and standard deviation 0.4. If P (X≤X0) = P (Z≤1.3). What is the value of X0.?

Select one:
2.00
5.52
6.90
4.48

2.Suppose X is a random variable that is normally distributed with a mean of 5. If P (X≤3) = 0.2005, what is the value of the standard deviation?

Select one:
σ = 2.38
σ = −2
σ = 1.38
σ = 2

Answer 1