Please Show Work.Thanks.Homework Answers
8)
Solution :
This hypothesis test is a left tailed test .
The null and alternative hypothesis is
H0 : p = 0.71
Ha : p < 0.71
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8. A government watchdog agency claims less than 71% of the U.S. population...
A government watchdog association claims that 70% of people in the U.S. agree that the government...
A government watchdog association claims that 70% of people in the U.S. agree that the government is inefficient and wasteful. A government agency wants to test this claim. In a random sample of 1165 people in the U.S., 746 agreed with that view. At a 95% confidence level, is there enough evidence to reject the association's claim? (Please show all work) a.) b.) c.) d.) e.)
please show work, thank you in advance! 14 A government watchdog association claims that 70% of...
please show work, thank you in advance!
14 A government watchdog association claims that 70% of people in the U.S. agree that the government is inefficient and wasteful. A government agency wants to test this claim. In a random sample of 1165 people in the U.S., 746 agreed with that view. At a 95% confidence level, is there enough evidence to reject the association's claim? is. A medical researcher says that at least 25% of U.S. adults are smokers. In...
4) A credit card watchdog group claims that cardholders in California have more credit card debt...
4) A credit card watchdog group claims that cardholders in California have more credit card debt than "cardholders in Florida. A random sample of 20 credit card holders from each state are selected. In California, the mean credit card debt was $3400 with a population standard deviation, 0, $950. In Florida, the mean credit card debt was $2900 with a population standard deviation, 62 = $850. Can you support the group's claim? Use a = 0.05. a. Identify the null...
Please Show Work. Thank you. 7. Conduct a hypothesis test showing all of your steps. Females...
Please Show Work. Thank
you.
7. Conduct a hypothesis test showing all of your steps. Females under the age of 51 years old are supposed to get, on average, 18 mg of iron daily. In a random sample of 44 women, their daily mean intake was 16.77 mg of iron with a standard deviation of 3.02 mg. An agency claims that women get less than the recommended daily iron intake. Test this claim with a 4% level of significance. a)...
A travel analyst claims that the mean price of a round trip flight from New York...
A travel analyst claims that the mean price of a round trip flight from New York City to Los Angeles is less than $507. In a random sample of 28 round trip flights from New York City to Los Angeles, the mean price is $502 with a standard deviation of $111. At α = 0.10, is there enough evidence to support the travel analyst’s claim? Identify the null and alternative hypotheses and label the claim. State whether to use a...
Hypothesis Testing - Setup: The American Mathematical Association claims that less than 40% of all Americans...
Hypothesis Testing - Setup: The American Mathematical Association claims that less than 40% of all Americans like statistics. In a random sample of 80 Americans, 37% of them liked mathematics. Suppose you were to test the claim of the American Mathematical Society. (a) What is the claim? p < 0.40 p > 0.40 p = 0.40 p < 40 (b) What does p represent? the mean number of Americans who like statistics the proportion of all people in the sample...
Please Show Work. Thanks 9. Conduct a hypothesis test showing all of your steps. A community...
Please Show Work. Thanks
9. Conduct a hypothesis test showing all of your steps. A community center claims that the chlorine level in its pool has a standard deviation of 0.48 parts per million (ppm). Samples were taken 27 times over the past month that yielded a standard deviation of 0.61 ppm. Test the center's claim with a 5% level of significance. a) State the hypotheses and label the claim. b) Is it left-tailed, right-tailed, or two-tailed (circle one)? c)...
For each of the following, please show the following to receive full credit. (Answers without these...
For each of the following, please show the following to receive full credit. (Answers without these steps will not be given credit) (a) Draw a curve and label each part to reflect a left, right, or two-tailed test (b) Claim: Show in symbols H0, Ha (c) Critical value- find the z0 or t0 values (d) What are the standardized test statistic z or t, and the P values from the calculator? (e) Comparing the critical values, α value, against the...
Please Show Work. Thank you. 2. Conduct a hypothesis test showing all of your steps. A...
Please Show Work. Thank
you.
2. Conduct a hypothesis test showing all of your steps. A Gallup Poll reports that 65% of American adults support labor unions. In order to test this claim, 988 adults in the U.S. were surveyed, of which 617 approved of labor unions. Do 65% of Americans support them? Test this claim with a 6% level of significance. a) State the hypotheses and label the claim. b) Is it left-tailed, right-tailed, or two-tailed (circle one)? c)...
(a) Draw a curve and label each part to reflect a left, right, or two-tailed test...
(a) Draw a curve and label each part to reflect a left, right, or two-tailed test (b) Claim: Show in symbols H0, Ha (c) Critical value- find the z0 or t0 values (d) What are the standardized test statistic z or t, and the P values from the calculator? (e) Comparing the critical values, α value, against the calculator results, state whether you reject, or fail to reject the null hypothesis (f) Interpret the decision in the context of the...
please show work, thank you in advance!
14 A government watchdog association claims that 70% of people in the U.S. agree that the government is inefficient and wasteful. A government agency wants to test this claim. In a random sample of 1165 people in the U.S., 746 agreed with that view. At a 95% confidence level, is there enough evidence to reject the association's claim? is. A medical researcher says that at least 25% of U.S. adults are smokers. In...
4) A credit card watchdog group claims that cardholders in California have more credit card debt than "cardholders in Florida. A random sample of 20 credit card holders from each state are selected. In California, the mean credit card debt was $3400 with a population standard deviation, 0, $950. In Florida, the mean credit card debt was $2900 with a population standard deviation, 62 = $850. Can you support the group's claim? Use a = 0.05. a. Identify the null...
Please Show Work. Thank
you.
7. Conduct a hypothesis test showing all of your steps. Females under the age of 51 years old are supposed to get, on average, 18 mg of iron daily. In a random sample of 44 women, their daily mean intake was 16.77 mg of iron with a standard deviation of 3.02 mg. An agency claims that women get less than the recommended daily iron intake. Test this claim with a 4% level of significance. a)...
Please Show Work. Thanks
9. Conduct a hypothesis test showing all of your steps. A community center claims that the chlorine level in its pool has a standard deviation of 0.48 parts per million (ppm). Samples were taken 27 times over the past month that yielded a standard deviation of 0.61 ppm. Test the center's claim with a 5% level of significance. a) State the hypotheses and label the claim. b) Is it left-tailed, right-tailed, or two-tailed (circle one)? c)...
Please Show Work. Thank
you.
2. Conduct a hypothesis test showing all of your steps. A Gallup Poll reports that 65% of American adults support labor unions. In order to test this claim, 988 adults in the U.S. were surveyed, of which 617 approved of labor unions. Do 65% of Americans support them? Test this claim with a 6% level of significance. a) State the hypotheses and label the claim. b) Is it left-tailed, right-tailed, or two-tailed (circle one)? c)...
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