need stats help pls

Question

In 1940 the average size of a U.S. farm was 174 acres. Let's say that the standard deviation was 57 acres. Suppose we randomly survey 48 farmers from 1940

The middle 50% of the distribution for Xbar, the bounds of which form the distance represented by the IQR, lies between what two values? (Round your answers to two decimal places.)

______ acre (smaller value)

______ acre (bigger value)

Answer 1

If you have a TI-84 calculator, use:

distr → 3:invNorm

For "area", type 0.5

For "μ", type 174

For "σ", type 57

For "Tail", select "CENTER"

then select "Paste", and hit "enter" twice.

You should get 135.55 to 212.45