Find the critical value zc necessary to form a confidence

September 30, 2019/in Questions Uploads /by Hannah Wangui

Question

Find the critical value z_c necessary to form a confidence interference at the level of confidence shown

below.

c=0.81

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Test the claim about the population mean

September 30, 2019/in Questions Uploads /by Hannah Wangui

Test the claim about the population mean,

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Test the claim about the population mean,

September 30, 2019/in Questions Uploads /by Hannah Wangui

Question

Test the claim about the population mean, μ,

at the given level of significance using the given sample statistics.

Claim: μ=50; α=0.01; σ=3.21 Sample statistics: x=49.3 n=58

a)Identify the null and alternative hypotheses

b)Calculate the standardized test statistic. (round two decimal places)

c)Determine the critical value(s)

d)Determine the outcome and conclusion of the test (Reject or Fail to reject)

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As part of your work for an environmental

September 30, 2019/in Questions Uploads /by Hannah Wangui

Question

As part of your work for an environmental

awareness group, you want to test the claim that the mean waste generated by adults in the country is more than 4 pounds per person per day. In a random sample of 11 adults in the country, you find that the mean waste generated per person per day is 4.3 pounds and the standard deviation is 1.7 pounds. At α=0.01, can you support the claim? Assume the population is normally distributed.

Write the claim mathematically and identify H₀ and H_a

What is(are) the critical value(s), t₀?

identify the rejection region(s).

Find the standardized test statistic.

Interpret the decision in the context of the original claim.