Question

1) Determine whether the following hypothesis test involves a sampling distribution of means that is a...

1) Determine whether the following hypothesis test involves a sampling distribution of means that is a normal distribution, Student t distribution, or neither.

Claim about IQ scores of statistics instructors: μ > 100.

Sample data: n = 15, x ¯= 118, s = 11.

The sample data appear to come from a normally distributed population with unknown μand σ.

a) student T-distribution

b) Normal distribution

c) Neither

2)

Determine whether the following hypothesis test involves a sampling distribution of means that is a normal distribution, Student t distribution, or neither.

Claim about daily rainfall amounts in Boston: μ < 0.20 i n c h e s

Sample data: n = 19, x ¯= 0.10in, s = 0.26 in.

The sample data appear to come from a population with a distribution that is very far from normal, and σis unknown.

a) Student T-distribution

b) Normal distribution

c) Neither

3)

Determine whether the following hypothesis test involves a sampling distribution of means that is a normal distribution, Student t distribution, or neither.

Claim about daily rainfall amounts in Boston: μ < 0.20 i n c h e s

Sample data: n = 52, x ¯= 0.10in, s = 0.26 in.

The sample data appear to come from a population with a distribution that is normal, and σis known.

a) Student T- distribution

b) Normal distribution

c) neither

4.)

The U.S. Mint has a specification that pennies have a mean weight of 2.5 g. A sample of 37 pennies has a mean weight of 2.49910 g and a standard deviation of 0.01648 g. Use a 0.05 significance level to test the claim that this sample is from a population with a mean weight equal to 2.5 g. Do the pennies appear to conform to the specifications of the U.S. Mint?

Which of the following are the correct hypotheses?

a) H 0 μ = 2.5 H 1 μ ≠ 2.5

b) H 0 μ = 2.5 H 1 μ > 2.5

c) H 0 μ = 2.5 H 1 μ < 2.5

Homework Answers

Answer #1

hii... although I am trying to provide the detailed answer but if you have any doubt please ask by comment. your rating encourage us to provide the detailed and effective answers so please like the answer. thanks...

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Determine whether the hypothesis test involves a sampling distribution of means that is a normal distribution,...
Determine whether the hypothesis test involves a sampling distribution of means that is a normal distribution, Student t distribution, or neither. Claim: ? = 119. Sample data: ? = 15, ?̅ = 103, ? = 15.2. The sample data, for this simple random sample, appear to come from a normally distributed population with unknown ? and ?.
Determine whether the hypothesis test involves using a normal distribution, Student t distribution, or neither. Claim:...
Determine whether the hypothesis test involves using a normal distribution, Student t distribution, or neither. Claim: μ = 981. Sample data: n = 15,   = 972, s = 26. The sample data appear to come from a normally distributed population with unknown σ. Select one: Neither normal nor t-distribution Student's t-distribution Normal distribution
Determine which distribution should be used in a hypothesis test with the following information, or if...
Determine which distribution should be used in a hypothesis test with the following information, or if it is not appropriate to conduct a hypothesis test. (a) The claim is μ ≤ 86. The sample data is: n = 29, ¯x = 85.2, and s = 8. The population standard deviation is unknown, and the population is not even approximately normally distributed. Normal (z) distribution    (or Z-Test on the calculator) Student t distribution    (or T-Test on the calculator) A...
Claim u = 977. Sample data: n = 25 and xbar = 984, s = 25....
Claim u = 977. Sample data: n = 25 and xbar = 984, s = 25. The sample data appear to come from a normally distributed population with o = 28. Does the hypothesis test involve sampling distribution of means that is normal, student t or neither?
Decide whether the normal sampling distribution can be used. If it can be​ used, test the...
Decide whether the normal sampling distribution can be used. If it can be​ used, test the claim about the population proportion p at the given level of significance alphaα using the given sample statistics.​Claim: pnot equals≠0.24​; alphaαequals=0.10​; Sample​ statistics: ModifyingAbove p with caretpequals=0.21​, nequals=200 Can the normal sampling distribution be​ used? state the null and alternative hypothesis. determine the critical value. find the z-test statistic. what is the result of the test? Reject Upper H 0H0. The data provide sufficient...
For the following​ information, determine whether a normal sampling distribution can be​ used, where p is...
For the following​ information, determine whether a normal sampling distribution can be​ used, where p is the population​ proportion,α is the level of​ significance, ModifyingAbove p with caretp is the sample​ proportion, and n is the sample size. If it can be​ used, test the claim. ​Claim: p>0.29 α=0.08 Sample​ statistics: ModifyingAbove p with caretpequals=0.36 n=375
Can a normal approximation be used for a sampling distribution of sample means from a population...
Can a normal approximation be used for a sampling distribution of sample means from a population with μ=53 μ=53 and σ=9 σ=9 , when n=64 n=64 ?
For the following​ information, determine whether a normal sampling distribution can be​ used, where p is...
For the following​ information, determine whether a normal sampling distribution can be​ used, where p is the population​ proportion, alphaα is the level of​ significance, ModifyingAbove p with caretp is the sample​ proportion, and n is the sample size. If it can be​ used, test the claim.​Claim: pgreater than or equals≥0.47 alphaαequals=0.06 Sample​ statistics: ModifyingAbove p with caretpequals=0.40, nequals=180
Which of the following statements is not true for sampling distributions? a. A sampling distribution is...
Which of the following statements is not true for sampling distributions? a. A sampling distribution is necessary for making confidence statements about an unknown population parameter. b. A sampling distribution depends on the nature of the population being sampled. c. When sampling at random from a normal population, the sampling distribution for the sample average is a normal distribution. d. None of the above. AND TRUE or FALSE Assume a random sample of size n is from a normal population....
Decide whether the normal sampling distribution can be used. If it can be​ used, test the...
Decide whether the normal sampling distribution can be used. If it can be​ used, test the claim about the difference between two population proportions p 1p1 and p 2p2 at the given level of significance alphaα using the given sample statistics. Assume the sample statistics are from independent random samples. ​Claim: p 1p1equals=p 2p2​, alphaαequals=0.010.01 Sample​ statistics: x 1x1equals=2323​, n 1n1equals=113113 and x 2x2equals=103103​, n 2n2equals=179179 a) find the standardized test statistics