please do NOT use excel .. explain how to each 8 questions .. hw 8.2 #10 A 0.01
ID: 3257114 • Letter: P
Question
please do NOT use excel .. explain how to each 8 questions .. hw 8.2 #10
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 greater than 0.5. Assume that sample data consists of 45 girls in 81 births, so the sample statistic of 5/9 results in a z score that is 1 standard deviation above 0.
1. Identify the null hypothesis and the alternative hypothesis.
Choose the correct answer below.
A. Upper H 0H0: p equals=0.5 Upper H 1H1: p greater than>0.5
B.Upper H 0H0:pequals=0.5Upper H 1H1:pnot equals0.5
C.Upper H 0H0:pnot equals0.5Upper H 1H1:pgreater than>0.5
D.Upper H 0H0:pequals=0.5Upper H 1H1:pless than<0.5
2.. What is the value of alpha ? =_____ (Type an integer or a decimal.)?
3.. What is the sampling distribution of the sample statistic?
Normal distribution, 2 ,Student (t) distribution
4. Is the test two-tailed, left-tailed, or right-tailed?
Right-tailed, Left-tailed, Two-tailed?
5. What is the value of the test statistic?
The test statistic is___________(Type an integer or a decimal.)
6. What is the P-value?
The P-value is_________ . (Round to 4 decimal places as needed.)
7. What are the critical value(s)?
The critical value(s) is/are ______(Round 2 decimal places as needed. Use a comma to separate answers as needed.)
8. What is the area of the critical region?
The area is ________ (Round to 2 decimal places as needed) ?
Explanation / Answer
1)
A. Upper H 0H0: p equals=0.5 Upper H 1H1: p greater than>0.5
2)
alpha = 0.01
3)
Normal distribution
4)
Right tailed test
5)
z = ( P - p) / s
= ( 0.5 - 0.056)/1
= 0.444
6)
p value = 0.328521.
7)
Critical valiue = 2.33
8)
area of critical region = 0.3285
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.