Question

Please show 6 step process and if possible show chart

meaning 4. Suppose that 9 observations are drawn from a normal population whose variance is 10. The observations are: 15, 9, 13, 11, 8, 12, 11, 7, and 10. At a-05, you want to determine whether the variance of the population from which this sample was taken is significantly different from 10.

Answer 1

Solution:-

Step 1 : H₀ = 10

Step 2 : H₁ not equal 10

Step 3 : Z = 1.0

Step 4: alpha = 0.05

Step 5 : p - value = 0.3174

Step 6 : cannt reject H0.Not enough evidence to say the mean is other than 10