State the null and alternative hypothesis, and decision rule for the following: a.) A coach wants...

State the null and alternative hypothesis, and decision rule for the following:

a.) A coach wants to know if his basketball students (n = 12) have a mean height larger than the population height of 70 inches ( s = 6). A one sample z-test will be used.

b.) A teacher wants to know if his class’s average life sciences test score is different from the district average of 78 (n = 25, s = 8). A one sample t-test will be used.

c.) 10 participants are randomly assigned to an experimental or control group (5 in each group) to test the effect of a sleeping pill on drowsiness the next day. An independent t-test will be used.

Expert Solution

orchestra answered 2 years ago

For each of the following statements: write the null and alternative hypothesis; state whether the test...

For each of the following statements: write the null and alternative hypothesis; state whether the test is left-, right-, or two-tailed, and state what the type I and type II errors would be in the context of the problem. (a) A researcher wants to show that at most, 20% of next year’s wheat crop will be exported to the Soviet Union. (b) A company claims that on average, American homemakers drink 3 cups of coffee per day.

State the Null Hypothesis State the Alternative Hypothesis Find the test statistic Find the critical value...

State the Null Hypothesis State the Alternative Hypothesis Find the test statistic Find the critical value or values State the conclusions to the hypothesis test. Please find all of the above for the scenarios below Part I. A university is looking into its mathematics placement procedure. The university assumes its population mean math SAT score of all incoming freshmen is 600. Suppose that a simple random sample of 33 freshmen at that university reveals a mean math SAT score of...

State what is the null hypothesis in a chi-square test & what is the alternative hypothesis...

State what is the null hypothesis in a chi-square test & what is the alternative hypothesis Explain what probability is represented by the p-value. What can you conclude when p-value is below the threshold of significance (e.g., p = 0.05)? What would you conclude when p-value is above the critical value? Is there a statistically significant association between one of the alleles tested and the Taster phenotype? Which genotype is over-represented in the Non-Tasters? Which allele is over-represented in the...

What is a null hypothesis? Wat is an alternative hypothesis? Then articulate a null hypothesis and...

What is a null hypothesis? Wat is an alternative hypothesis? Then articulate a null hypothesis and alternative hypothesis for a research study that pertains to you're area of specialization. What conclusions can be drawn from this study with a "statistically significant" result?

1: Conduct the following hypothesis test. Specify the null and alternative hypotheses, and clearly state the...

1: Conduct the following hypothesis test. Specify the null and alternative hypotheses, and clearly state the conclusion of the test. Use the data from 6.3.3 (?̅ = 31.7, ? = 8.7, ? = 5). Is there enough evidence to conclude that the mean thymus weight is greater than 25mg? Set ? = 0.05 2: Suppose we used a two-tailed alternative for the previous test instead (thymus weight is not equal to 25mg). How would the p-value of the test change?...

here is my Null Hypothesis and Alternative Hypothesis: Null Hypothesis: There is no significant difference in...

here is my Null Hypothesis and Alternative Hypothesis: Null Hypothesis: There is no significant difference in the housing expenses between married and unmarried households. Alternative Hypothesis: There is a significant difference in the housing expenses between married and unmarried households. what are the type I and type II errors?

For Hypothesis testing and Decision making problems, please do the following: 1. State the null and...

For Hypothesis testing and Decision making problems, please do the following: 1. State the null and alternate hypothesis. 2. Write down the proper test statistic. 3. Show all calculations. 4. Show the critical value. 5. State your conclusions. 2. Some people seem to believe that you can fix anything with duct tape. Even so, many were skeptical when researchers announced that duct tape may be a more effective and less painful alternative to the more traditional technique of using liquid...

For each of the following, (a) state the null hypothesis and (b) state the alternate hypothesis,...

For each of the following, (a) state the null hypothesis and (b) state the alternate hypothesis, (c) state the type of test that you will use to test the hypothesis and the level of significance, (d) state the critical value , (e) calculate the z-statistic or the t-statistic, (f) state whether we shall reject or fail to reject the null hypothesis, (g) state the relation between the p-value and α with an appropriate inequality, and (h) conclude the hypothesis test...

For each of the following, (a) state the null hypothesis and (b) state the alternate hypothesis,...

For each of the following, (a) state the null hypothesis and (b) state the alternate hypothesis, (c) state the type of test that you will use to test the hypothesis and the level of significance, (d) state the critical value , (e) calculate the z-statistic or the t-statistic, (f) state whether we shall reject or fail to reject the null hypothesis, (g) state the relation between the p-value and α with an appropriate inequality, and (h) conclude the hypothesis test...

For this problem you must state the null and alternative hypothesis, the critical value/s and/ or...

For this problem you must state the null and alternative hypothesis, the critical value/s and/ or the rejection graph, the test statistic, a sentence describing your results, and the p-value of rejection. 4. Suppose prior election in a certain state indicated that it is necessary for a candidate governor to receive at least 80% of the vote to be elected. The incumbent governor is interested in assessing his or her chances of returning to office and plans to conduct a...

Question

State the null and alternative hypothesis, and decision rule for the following: a.) A coach wants...

Solutions

Expert Solution

Related Solutions

For each of the following statements: write the null and alternative hypothesis; state whether the test...

State the Null Hypothesis State the Alternative Hypothesis Find the test statistic Find the critical value...

State what is the null hypothesis in a chi-square test & what is the alternative hypothesis...

What is a null hypothesis? Wat is an alternative hypothesis? Then articulate a null hypothesis and...

1: Conduct the following hypothesis test. Specify the null and alternative hypotheses, and clearly state the...

here is my Null Hypothesis and Alternative Hypothesis: Null Hypothesis: There is no significant difference in...

For Hypothesis testing and Decision making problems, please do the following: 1. State the null and...

For each of the following, (a) state the null hypothesis and (b) state the alternate hypothesis,...

For each of the following, (a) state the null hypothesis and (b) state the alternate hypothesis,...

For this problem you must state the null and alternative hypothesis, the critical value/s and/ or...