11. Determine the p-value given the stated hypothesis and the test statistic value (Z) Ho:μ= 300...

11. Determine the p-value given the stated hypothesis and the test statistic value (Z) Ho:μ= 300 H1: μ < 300; z = -2.13 Answer to 4 decimal places.

12. Determine the p-value given the stated hypothesis and test statistic value (Z). Ho: μ = 120 H₁: μ ≠ 120; z = 1.92. Answer to 4 decimal places.

13. Some people claim that the physical demand on dancers are such that dancers tend to be shorter than the typical person. Nationally, adult heights are normally distributed with an average of 64.5 inches. A random sample of 20 adult dancers has an average height of 63.275 inches and a standard deviation of 2.17 inches. Is there evidence that dancers are shorter? Calculate the test-statistic for a test

Ho: μ = 64.5 versus Ha: μ < 64.5

Compute the test statistic for this test. (round your answer to 2 decimal places)

14. The mean caffeine content per cup of regular coffee served at a certain coffee shop is supposed to be 100mg. A test is made of Ho: μ=100 versus Ha: μ≠100. A sample of 35 cups does not provide enough evidence that the mean caffeine content is different from 100mg. Which type of error is possible in this situation?

	A.	Type 2 error
	B.	Type 1 error
	C.	Impossible to tell
	D.	Either type is possible

Solutions

Expert Solution

11. Since, significance level is not given, we assume it to be 0.05.

Since the test is left tailed, the p value would be P(z<-2.13)

This probability can be found by simply looking at the z left table.

P(z<-2.13)= 0.0166

milcah answered 9 months ago

Next > < Previous

Related Solutions

Find the P-value for the indicated hypothesis test with the given standardized test statistic, z. Decide...

Find the P-value for the indicated hypothesis test with the given standardized test statistic, z. Decide whether to reject Upper H0 for the given level of significance alphaα. Two-tailed test with test statistic zequals=−2.18 and alphaαequals=0.04 P-valueequals= p-value=___ (round to four decimal places if needed) state your conclusion. fail to reject or reject h0 #38

Find the P- value for the hypothesis test with the standardized test statistic z. Decide whether...

Find the P- value for the hypothesis test with the standardized test statistic z. Decide whether to reject H0 for the level of significance α. Two- tailed test z = 1.95 α = 0.05

Find the P-value for the hypothesis test with the standardized test statistic z. Decide whether to...

Find the P-value for the hypothesis test with the standardized test statistic z. Decide whether to reject H0 for the level of significance α. ( Marks 2) Right-tailed test z = 0.52 α = 0.06

Question No 4 Find the P-value for the hypothesis test with the standardized test statistic z....

Question No 4 Find the P-value for the hypothesis test with the standardized test statistic z. Decide whether to reject H0 for the level of significance α. (Marks 1.5) Left -tailed test z = -1.52 α = 0.04 A trucking firm suspects that the mean life of a certain tire it uses is less than 35,000 miles. To check the claim, the firm randomly selects and tests 18 of these tires and gets a mean lifetime of 34,450 miles with...

Find the P-value for the hypothesis test with the standardized test statistic z. Decide whether to...

Find the P-value for the hypothesis test with the standardized test statistic z. Decide whether to reject H0 for the level of significance α. Right-tailed test z = 0.52 α = 0.06 A manufacturer claims that the mean lifetime of its fluorescent bulbs is 1000 hours. A homeowner selects 40 bulbs and finds the mean lifetime to be 990 hours with a standard deviation of 80 hours. Test the manufacturer’s claim. Use α = 0.04 and use traditional approach.

For a given hypothesis test, the p-value of the test statistic equals 0.032. This implies a...

For a given hypothesis test, the p-value of the test statistic equals 0.032. This implies a 0.032 probability of making a: a.) Type I error b.) Type II error c.) Correct rejection of the null d.) Correct acceptance of the null

Test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, and then state...

Test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, and then state the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. Among 2084 passenger cars in a particular region, 241 had only rear license plates. Among 349 commercial trucks, 53 had only rear license plates. A reasonable hypothesis is that commercial trucks owners violate laws requiring front license plates at a higher rate than owners of passenger cars....

Test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, and then state...

Test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, and then state the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. Among 2173 passenger cars in a particular region, 235 had only rear license plates. Among 335335 commercial trucks, 5151 had only rear license plates. A reasonable hypothesis is that commercial trucks owners violate laws requiring front license plates at a higher rate than owners of passenger cars....

Test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, and then state...

Test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, and then state the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. Among 2091 passenger cars in a particular region, 226 had only rear license plates. Among 375 commercial trucks, 56 had only rear license plates. A reasonable hypothesis is that commercial trucks owners violate laws requiring front license plates at a higher rate than owners of passenger cars....

Test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, and then state...

Test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, and then state the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. Among 2083 passenger cars in a particular region, 230 had only rear license plates. Among 325 commercial trucks, 47 had only rear license plates. A reasonable hypothesis is that commercial trucks owners violate laws requiring front license plates at a higher rate than owners of passenger cars....

Subjects