QuickHelper

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Category > Statistics Posted 28 Aug 2017 My Price 11.00

4 questions answer thanks

Question description

 

  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: .

Sample data: n = 15, x & OverBar; = 118, s = 11.

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

μ and

select: student T distribution, normal distribution or 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:

Sample data: n = 19, x O&verBar;= 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 σ is unknown.

Select either: student T distribution, normal distribution or 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:

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 σ is known.

Selec either: student T distribution, normal distribution or 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? Show all of your steps.

Answers

QuickHelper
(10)
Status NEW Posted 28 Aug 2017 08:08 AM My Price 11.00

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