Question

Do one of the following, as appropriate: (a) Find the critical value zα/2, (b) find the critical value tα/2, (c) state that neither the normal nor the t distribution applies. 91%; n = 45; σ is known; population appears to be very skewed. zα/2 = 1.70

Answer 1

The population appears to be very skewed, so neither the normal distribution nor the t distribution applies in this case. The critical value zα/2 is 1.70.

Step-by-step explanation:

The population appears to be very skewed, so neither the normal distribution nor the t distribution applies in this case. Instead, we can use the z distribution since σ is known. The critical value zα/2 is given as 1.70.