Describe how to write the null and alternative hypotheses based on a claim. Provide at least...
Describe how to write the null and alternative hypotheses based on a claim. Provide at least one example to clarify your explanation.
The first thing that you should know is that there are two Hypotheses one is called the Null Hypothesis (H0) and the Alternative Hypothesis (H1); they are mutually exclusive. The null hypothesis is the hypothesis that the researcher is trying to discredit. The null hypothesis is correct if the observed data (in the sample) do not differ from what would be expected on the basis of chance alone. The complement of the null hypothesis is called the alternative hypothesis.
Example:
A researcher is studying the effects of an exercise program foot surgery outpatients. There is a good chance the therapy will improve recovery time, but there’s also the possibility it will make it worse. The average recovery time for foot surgery patients is 8.2 weeks. What will happen if the experiment doesn’t make any difference? That’s the null hypothesis–that nothing will happen. In this experiment, if nothing happens, then the recovery time will stay at 8.2 weeks.
H0: μ = 8.2
The alternate hypothesis is the opposite of the null hypothesis. In other words, what happens if our experiment makes a difference?
H1: μ ≠ 8.2
that’s H1 (The alternate hypothesis): μ (the average) ≠ (is not equal to) 8.2
That’ the statement of the Null Hypothesis!
Is this correct?
Homework Answers
The null hypothesis is the statement which is believed to be true.
Therefore,
I.e The average recovery time for foot surgery patients is 8.2 weeks.
I.e The average recovery time for foot surgery patients is different from 8.2 weeks.
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Describe how to write the null and alternative hypotheses based
on a claim. Provide at least...
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Stating the Research and Null Hypotheses. What you are trying to prove is called the research hypothesis, or alternative hypothesis, and is symbolized by H1 (some books write it as Ha ). Research hypotheses are always expressed in terms of population parameters because we are interested in making statements about a population, based on sample statistics. The null hypothesis, or H0, contradicts the research hypothesis, and is usually a statement of no difference. In each of the following situations,...
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a) State the null and alternative hypotheses. Which of the following is correct? A. H0: μ1=μ2;...
a) State the null and alternative hypotheses. Which of the
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(b) Identify the P-value and state the researcher's
conclusion if the level of significance was
α=_____
What is the P-value?
P-value=____
State the researcher's conclusion. Which of the following is
correct?
A. Fail to reject H0,there is sufficient evidence to conclude
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B.
Please follow the steps of hypothesis testing, including
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the null hypothesis and a final conclusion that addresses the
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The z-tests Help with this page is greatly appreciated. I dont understand how to show a full diagram. Thanks in advance :) The z-test 10.1 Assume that a treatment does have an effect and that th...
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Help with this page is greatly appreciated. I dont understand
how to show a full diagram. Thanks in advance :)
The z-test 10.1 Assume that a treatment does have an effect and that the treatment effect is being evaluated with a z hypothesis test. If all factors are held constant, how is the outcome of the hypothesis test influenced by sample size? To answer this question, do the following two tests and compare the results. For both tests,...
below, write the claim as a mathematical statement. State the null and abernative hypotheses and identily which represents the clain A company claims that its brands of paint have a mean drying time of less than 15 minutes OD, μ215 Choose the correct null and alternative hypotheses below OA, Hops 15 Ha μ> 15 H.215 Ha μ= 15 Ha μ.15 0 OA. The null hypothesis Ho μ 15 is the claim O B. The null hypothesis Ho p 15 is...
7. For any hypothesis test: b) Write down the appropriate alternative hypotheses and give the formula for the each test statistic, if any, for the following null hypothesis testing population normally distributed population not normal population not normal population not normal population normal population normal population not normal () Ho: So n 80, s 29 (iii) Ho: μ-Ha n-15, σ-25 (iv) Ho: μ=Ha n= 15, s = 36 (v) Ho: μ>Ha n= 10, σ = 16 (vi) H0'μ Han-60, σ-81...
a) State the null and alternative hypotheses. Which of the
following is correct?
A. H0: μ1=μ2; Ha: μ1<μ2 This is the correct answer.
B. H0: μ1=μ2; Ha: μ1≠μ2
C. H0: μ1=μ2; Ha: μ1>μ2
(b) Identify the P-value and state the researcher's
conclusion if the level of significance was
α=_____
What is the P-value?
P-value=____
State the researcher's conclusion. Which of the following is
correct?
A. Fail to reject H0,there is sufficient evidence to conclude
that the mean step pulse of...
A.
B.
Please follow the steps of hypothesis testing, including
identifying the alternative and null hypothesis, calculating the
test statistic, finding the p-value, and making a conclusions about
the null hypothesis and a final conclusion that addresses the
original claim. Use a significance level of 0.10. Is the conclusion
affected by whether the significance level is 0.10 or 0.01?
Test Statistic=______ (Round to two decimal places)
P-Value=______ (Round to three decimal places)
Answer choices below:
a) Yes, the conclusion is...
The
z-tests
Help with this page is greatly appreciated. I dont understand
how to show a full diagram. Thanks in advance :)
The z-test 10.1 Assume that a treatment does have an effect and that the treatment effect is being evaluated with a z hypothesis test. If all factors are held constant, how is the outcome of the hypothesis test influenced by sample size? To answer this question, do the following two tests and compare the results. For both tests,...
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