4. Let X be a random variable with a normal distribution with mean μ=16.7 and standard deviation σ=4.5. Calculate: P(X≤7.78orX≥14.41)= Answer If P(Xk)=0.19, then the value of k is Answer Note: Answer...

4. Let X be a random variable with a normal distribution with mean μ=16.7 and standard deviation σ=4.5. Calculate:

P(X≤7.78orX≥14.41)= Answer

If P(X

If P(X>k)=0.19, then the value of k is Answer

Note: Answer with at least 4 decimal places