Question

A

0.05

significance level is used for a hypothesis test of the claim that when parents use a particular method of gender selection, the proportion of baby girls is different from 0.5.

a. Identify the null hypothesis and the alternative hypothesis. Choose the correct answer below.

A.

Upper H 0H0 :

pnot equals≠0.5

Upper H 1H1 :

pequals=0.5

B.

Upper H 0H0 :

pequals=0.5

Upper H 1H1 :

pgreater than>0.5

C.

Upper H 0H0 :

pequals=0.5

Upper H 1H1 :

pless than<0.5

D.

Upper H 0H0 :

pequals=0.5

Upper H 1H1 :

pnot equals≠0.5

b. Is the test two-tailed, left-tailed, or right-tailed?

Right-tailed

Left-tailed

Two-tailed

c. What are the critical value(s)?

The critical value(s) is/are

nothing.

(Round to three decimal places as needed. Use a comma to separate answers as needed.)

Answer 1

Given that, significance level $(\alpha)$ = 0.05

a) The null and the alternative hypotheses are,

$H_0 : p = 0.5$

$H_1: p \neq 0.5$

b) The test is two-tailed

c) The critical values at significance level $(\alpha)$ = 0.05 are,

-1.960, 1.960