Question

1. Harpers Index claims that 23% of Americans are in favor of outlawing cigarettes.

H₀:

H₁:

test statistic:

Answer 1

Solution :

This is the two tailed test .

The null and alternative hypothesis is

H₀ : p = 0.23

H_a : p 0.23

If

= x / n = 54 / 200 = 0.27

P₀ = 0.23

1 - P₀ = 0.23

Test statistic = z

= - P₀ / [P_{0 *} (1 - P₀ ) / n]

= 0.27 - 0.23 / [(0.23 * 0.77) / 200]

= 1.34

Test statistic = 1.34