If the null hypothesis is rejected at the .05 level of significance, it will a. always...

If the null hypothesis is rejected at the .05 level of significance, it will a. always not be rejected at the .10 level of significance. b. always be rejected at the .10 level of significance. c. sometimes be rejected at the .10 level of significance. d. sometimes not be rejected at the .10 level of significance.

Expert Solution

orchestra answered 2 years ago

A null hypothesis is not rejected at a given level of significance. As the assumed value...

A null hypothesis is not rejected at a given level of significance. As the assumed value of the mean gets further away from the true population mean, the Type II error will

Suppose you rejected a null hypothesis at 5% level of significance. Give your opinion as to...

Suppose you rejected a null hypothesis at 5% level of significance. Give your opinion as to whether or not you would get the same level of statistical significance if you were to do the experiment over multiple times. Explain your response.

The 5% (.05) significance level is the widely accepted criterion for Null Hypothesis Significance Testing. Discuss...

The 5% (.05) significance level is the widely accepted criterion for Null Hypothesis Significance Testing. Discuss some problems with using a strict cutoff to determine whether your findings were significant. Discuss how you can make sure that you are presenting your results more fairly/honestly. How can a confidence interval help with estimating the practical significance of your results?

a) If sample data are such that the null hypothesis is rejected at the alpha=5% level...

a) If sample data are such that the null hypothesis is rejected at the alpha=5% level of significance based upon a 2 tailed test, is H0 also rejected at the alpha=1% level of significance ? Explain. b) If a 2 tailed hypothesis test leads to rejection of the null hypothesis at a certain level of significance, would the corresponding 1 tailed test lead to rejection of the null hypothesis ? Explain.

A) If sample data are such that the null hypothesis is rejected at the alpha=5% level...

A) If sample data are such that the null hypothesis is rejected at the alpha=5% level of significance based upon a 2 tailed test, is Ho also rejected at the alpha=1% level of significance? Explain. B) If a 2 tailed hypothesis test leads to rejection of the null hypothesis at a certain level of significance, would the corresponding 1 tailed test lead to rejection of the null hypothesis? Explain.

in hypothesis testing if the null hypothesis is rejected -the alternative hypothesis is likely to be...

in hypothesis testing if the null hypothesis is rejected -the alternative hypothesis is likely to be true - no conclusions can be drawn from the test -the data must have been accumulated incorrectly -the sample size has been to small

If the test is done at a 5% level of significance, the null hypothesis should

n = 49 H0: μ = 50 x = 54.8 Ha: μ ≠ 50 σ = 28 If the test is done at a 5% level of significance, the null hypothesis should a. not be rejected b. be rejected c. Not enough information given to answer this question. d. None of the other answers are correct.

For a two-tailed hypothesis test at the significance level alpha, the null hypothesis H0: μ =...

For a two-tailed hypothesis test at the significance level alpha, the null hypothesis H0: μ = μ0 will be rejected in favor of the alternative hypothesis Ha: μ≠ μ0 if and only if μ0 lies outside the (1 - α) level confidence interval for μ. Illustrate the preceding relationship by obtaining the appropriate one-mean z-interval for the data below. Suppose the mean height of women age 20 years or older in a certain country is 62.8 inches. One hundred randomly...

For a two tailed hypothesis test at the significance level a, the null hypothesis H0: M=M0...

For a two tailed hypothesis test at the significance level a, the null hypothesis H0: M=M0 will be rejected in favor of the alternative hypothesis Ha: M does not = M0 lies outside the (1-a) level confidence interval for M. Illustrate the preceding relationship by obtaining the appropriate one mean t interval for the data below. According to a survey, the average person watched 4.53 hours of television per day in 2005. A random sample of 20 people gave the...

Test the hypothesis with a significance level (alpha) of .05 that the climate has changed since...

Test the hypothesis with a significance level (alpha) of .05 that the climate has changed since industrialization. Suppose that the mean temperature throughout history is 52 degrees. During the last 30 years, the mean temperature has been 53 degrees and suppose the population standard deviation is 2 degrees. What can we conclude? Then construct a 95 percent confidence interval for the population mean.

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