Chapter 6, Section 3-D, Exercise 131 Consider random samples of size drawn from
ID: 3369246 • Letter: C
Question
Chapter 6, Section 3-D, Exercise 131
Consider random samples of size drawn from population with proportion and random samples of size drawn from population with proportion .
(a) Find the standard error of the distribution of differences in sample proportions, . Round your answer for the standard error to three decimal places. standard error the absolute tolerance is +/-0.001 SHOW HINT LINK TO TEXT
(b) Are the sample sizes large enough for the Central Limit Theorem to apply? Yes No
Chapter 6, Section 3-D, Exercise 132
Consider random samples of size 298 drawn from population A with proportion 0.19 and random samples of size 291 drawn from population B with proportion 0.32.
the absolute tolerance is +/-0.001
LINK TO TEXT
Chapter 6, Section 3-D, Exercise 135
Consider random samples of size 40 drawn from population A with proportion 0.35 and random samples of size 32 drawn from population B with proportion 0.22.
the absolute tolerance is +/-0.001
LINK TO TEXT
Chapter 6, Section 3-D, Practice Problem 6.3-D.L
If random samples of the given sizes are drawn from populations with the given proportions, find the mean and standard error of the distribution of differences in sample proportions, p^1-p^2.
n1=140 from p1=0.8 and n2=90 from p2=0.5
Chapter 6, Section 3-CI, Exercise 139
Use the normal distribution to find a confidence interval for a difference in proportions p1-p2 given the relevant sample results. Assume the results come from random samples.
Chapter 6, Section 3-CI, Exercise 141
Use the normal distribution to find a confidence interval for a difference in proportions p1-p2 given the relevant sample results. Assume the results come from random samples.
Chapter 6, Section 3-CI, Exercise 150
Chapter 6, Section 3-D, Exercise 132
Consider random samples of size 298 drawn from population A with proportion 0.19 and random samples of size 291 drawn from population B with proportion 0.32.
Explanation / Answer
Chapter 6, Section 3-D, Exercise 132
Sp1-p2=sqrt(p1^ (1-p1^)/n1+p2^(1-p2^)/n2
=sqrt(0.19(1-0.19)/298+0.32(1-0.32)/291)
=0.036
ANSWER(a)0.036
Since n1,n2 are both greater than 30
large samples
Follows central limit thoerem
Solutionb
(b) Are the sample sizes large enough for the Central Limit Theorem to apply?
(YES)
Chapter 6, Section 3-D, Exercise 132
Sp1-p2=sqrt(p1^ (1-p1^)/n1+p2^(1-p2^)/n2
=sqrt(0.19(1-0.19)/298+0.32(1-0.32)/291)
=0.036
ANSWER(a)0.036
Since n1,n2 are both greater than 30
large samples
Follows central limit thoerem
Solutionb
(b) Are the sample sizes large enough for the Central Limit Theorem to apply?
(YES)
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.