ActivityChallenging a Claim: Tests of HypothesesUse the Internet or a newspaper or magazine to find an example of aclaim made by a political or special-interest group about some char-acteristic (e.g., favor gun control) of the U.S. population. In this activity,you represent a rival group that believes the claim may be false.1. In your example, what kinds of evidence might exist whichwould cause one to suspect that the claim might be false andtherefore worthy of a statistical study? Be specific. If the claimwere false, how would consumers be hurt?2. Describe what data are relevant and how that data might becollected.3. Explain the steps necessary to reject the group's claim at levela. State the null and alternative hypotheses. If you reject theclaim, does it mean that the claim is false?4. If you reject the claim when the claim is actually true, whattype of error has occurred? What is the probability of this erroroccurring?5. If you were to file a lawsuit against the group based on yourrejection of its claim, how might the group use your results todefend itself?of their ages?

1) One example of a claim made by a political group is the National Rifle Association (NRA) claiming…

Answered: Activity Challenging a Claim: Tests of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Hypothesis testing will consist of four hypothesis tests which you need to complete. While you will not need to show your work or upload any files, each test will require the following: Type of Test: Null Hypothesis: Alternate Hypothesis: SE: Test Statistic: P-value: Decision: Sentence:
Claim: A minority of adults would erase all of their personal information online if they could. A software firm survey of 688 randomly selected adults showed that 37% of them would erase all of their personal information online if they could. Complete parts (a) and (b) below. dentify the null and alternative hypothese
9.15 Toxic Mushrooms? Cadmium, a heavy metal, is toxic to ani- mals. Mushrooms, however, are able to absorb and accumulate cad- mium at high concentrations. The Czech and Slovak governments have set a safety limit for cadmium in dry vegetables at 0.5 part per million (ppm). M. Melgar et al. measured the cadmium levels in a random sample of the edible mushroom Boletus pinicola and pub- lished the results in the paper "Influence of Some Factors in Toxi- city and Accumulation of Cd from Edible Wild Macrofungi in NW Spain" (Journal of Environmental Science and Health, Vol. B33(4), pp. 439-455). A hypothesis test is to be performed to decide whether the mean cadmium level in Boletus pinicola mushrooms is greater than the government's recommended limit.
A radio station states that 30% of the songs they play each week are from Canadian artists. A DJ working at the station claims that the actual percentage differs from what the station states. The DJ takes a random sample of 87 songs played during a given week and finds that 28 of them are from Canadian artists. Use this information to answer the questions below. a. Suppose the DJ wishes to perform a hypothesis test of his claim. Select the most appropriate null and alternative hypotheses for this hypothesis test. H0:p^≠0.3Ha:p^=0.3 H0:x―=0.3Ha:x―≠0.3 H0:μ≠0.3Ha:μ=0.3 H0:p=0.3Ha:p≠0.3 H0:μ=0.3Ha:μ≠0.3 H0:p≠0.3Ha:p=0.3 H0:p^=0.3Ha:p^≠0.3 H0:x―≠0.3Ha:x―=0.3 b. To assess his hypothesis, the DJ wants to compute a bootstrap-based confidence interval from his sample. Which of the following uses of the quantile() function would produce the correct interval bounds for a 96% bootstrap-based confidence interval? c(quantile(B$mean, 0.04), quantile(B$mean, 0.96)) c(quantile(B$mean, 0.02),…
What is the final conclusion? O A. There is not sufficient evidence to support the claim that less than 25% of offspring peas will be yellow. O B. There is sufficient evidence warrant rejection of the claim that 25% of offspring peas will be yellow. OC. There is sufficient evidence to support the claim that less than 25% of offspring peas will be yellow. O D. There s not sufficient evidence to warrant rejection of the claim that 25% of offspring peas will be yellow.
Skittles Original Fruit bite-size candies are multicolored candies in a bag, and you can "Taste the Rainbow" with their five colors and flavors: green, lime; purple, grape; yellow, lemon; orange, orange; and red, strawberry. Unlike some of the other multicolored candies available, Skittles claims that their five colors are equally likely. In an attempt to reject this claim, a 4-oz bag of Skittles was purchased and the colors counted. Does this sample contradict Skittle's claim at the .05 level? Red Orange Yellow Green Purple 29 26 26 26 29 (a) Find the test statistic. (Give your answer correct to two decimal places.)(b) Find the p-value. (Give your answer bounds exactly.) ______< p < ________
When using the 4 step hypothesis testing method, the alternative hypothesis __________? a. is symbolized by: H1 b. is symbolized by: H0 c. states that the two population means are equal d. must be directional in nature (must be a one tailed test)
Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject the null hypothesis? A researcher claims that at least 82% of people had at least one health care visit in the past year. Does the claim represent the null hypothesis or the alternative hypothesis? Since the claim does not contain a statement of equality, it represents the hypothesis. (a) How should you interpret a decision that rejects the null hypothesis? There is evidence to V the claim that at least 82% of people had at least one health care visit in the past year. (b) How should you interpret a decision that fails to reject the null hypothesis? There is evidence to V the claim that at least 82% of people had at least one health care visit in the past year.
Consider a drug that is used to help prevent blood clots in certain patients. In clinical trials, among 5791 patients treated with this drug, 160 developed the adverse reaction of nausea. Use a 0.10 significance level to test the claim that 3% of users develop nausea. Does nausea appear to be a problematic adverse reaction? Identify the null and alternative hypotheses for this test. Choose the correct answer below. A. Ho:p=0.03 H4:p#0.03 O B. Ho: p#0.03 H4:p=0.03 OC. Ho: p=0.03 H4:p0.03 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is (Round to three decimal places as needed.)
In hypothesis testing the statistical conclusion is either to reject or not to reject the null hypothesis based on the sample data. Which of the following statements is true? The conclusion will always reject a false null hypothesis. The conclusion is always subject to error because it is based on sample data. The conclusion will never reject a true null hypothesis. The conclusion is always free from error if the correct procedure is foll
Discuss whether the following hypothesis is a good hypothesis (i.e., they are logical, testable, refutable, and positive). Specifically say whether if it is logical, testable, refutable, and positive. If so, why? If not, why not? If atomic weapons were never invented, then there would be less anxiety in the world.
In general terms, what does an alternative hypothesis (H1) say? Group of answer choices There is a treatment effect in the sample There is no treatment effect in the population There is a treatment effect in the population There is no treatment effect in the sample

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