contestada

A 0.01 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 less than 0.5.

Assume that sample data consists of 66 girls in 144 births, so the sample statistic of StartFraction 11 Over 24 EndFraction results in a z score that is 1 standard deviation below 0.
Complete parts? (a) through? (h) below.
Click here to view page 1 of the Normal table. LOADING... Click here to view page 2 of the Normal table. LOADING...
Identify the null hypothesis and the alternative hypothesis.
Choose the correct answer below.

A. Upper H 0?: pequals0.5 Upper H 1?: pgreater than0.5

B. Upper H 0?: pequals0.5 Upper H 1?: pnot equals0.5

C. Upper H 0?: pnot equals0.5 Upper H 1?: pless than0.5

D. Upper H 0?: pequals0.5

Respuesta :

opudodennis

Answer:

Option D

[tex]H_o[/tex] equals 0.5 [tex]H_a[/tex] less than 0.5

Explanation:

Information given

N=144

X=66

[tex]P=\frac {x}{n}=66/144= 0.458333\approx 0.46[/tex]

The hypothesis

Null hypothesis

Probability, p =0.5

[tex]H_o: p =0.5[/tex]

Alternative hypothesis

Probability, p<0.5

[tex]H_a: p<0.5[/tex]

Otras preguntas