15. b. Identify the test statistic c. The P-value for this hypothesis test is A 9-year-old girl did a science fair experiment in which she tested professional touch therapists to see if they could sense her energy field.She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placingtheir hand just under her hand without seeing it and without touching it. Among 277 trials, the touch therapists were correct 113 times. Usea 0.01 significance level to test the claim that touch therapists use a method equivalent to random guesses. Do the results suggest thattouch therapists are effective?

given data clim : p = 0.50n = 277x = 113α = 0.01p^ = xn = 113277 = 0.4079

Answered: A 9-year-old girl did a science fair…

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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49
a. What are the null and alternative hypotheses? b. determine the test statistic c. determine the p-value
4. A corporate lawyer wonders whether the vigor of antitrust enforcement differed in the 2010s com-pared to the 2000s. A sample of 10 firms is selected from the Fortune 500 list, and the data of table below are collected. Make an appropriate hypothesis test at the 5 percent level of significance using sign test. Number of Indictments (Charges) Firm 2000s 2010s A 8. 3 D 7 9. 10 9. F 15 20 18 12 7 8 12 J 3
B. Identify the test statistic test C. Identify the P-value for this hypothesis test D. If P-value is reject H0 or fail to reject H0?
A. Determine the test statistic B. Determine the P-value C.reject or fail to reject H0 D. Determine if the results suggest that all of child booster seats meet the specified requirement.
Test the claim that the proportion of men who own cats is larger than 20% at the .01 significance level. The null and alternative hypothesis would be: Ho: P 0.2 Hop 0.2 Hoμ = 0.2 H₁: p0.2 H₁ : μ 0.2 (to 2 decimals) (to 2 decimals) Ho: p = 0.2 0 H₁: p < 0.2
K In a random sample of males, it was found that 23 write with their left hands and 212 do not. In a random sample of females, it was found that 58 write with their left hands and 442 do not. Use a 0.05 significance level to test the claim that the rate of left-handedness among males is less than that among females. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of males and the second sample to be the sample of females. What are the null and alternative hypotheses for the hypothesis test? O A. Ho: P₁ P2 H₁: P₁ P2 O D. Ho: P₁ P2 H₁: P₁ P2 Z= OB. Ho: P1 P2 H₁: P₁ P2 Identify the test statistic. -0 (Round to two decimal places as needed.) Identify the P-value. OE Ho: P1 H₁: P₁ The P-value is hypothesis. There P-value= (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? P₂ P₂ OC. Ho: P₁ SP2 H₁: P₁ P₂ OF. Ho: P1 P2 H₁: P₁ P2 the significance level of a = 0.05, so Because…
Test the claim that the proportion of men who own cats is smaller than 40% at the .005 significance level. The null and alternative hypothesis would be:
B. Identify the test statistic. ______ C. Identify the P-value. ____ D. What is the conclusion for this test? The P-value is (greater than/less than) the significance level α, so (reject/ fail to reject) the null hypothesis. There is (sufficient/ insufficient) evidence to support the claim that vinyl gloves have a greater virus leak rate than latex gloves.
3. The value of test statistic is 1.52. a. What is the p – value of two-tailed one-sample t – test if n = 11 i. 0.0797 ii. 0.9203 iii. 0.1594 iv. 0.8406 b. The null hypothesis should be i. Rejected ii. Retained
B. Identify the test statistic test C. Identify the P-value for this hypothesis test D. If P-value is reject H0 or fail to reject H0?
5. In a certain county, the local newspaper reports that the average family income for that county is $45,000. Economists at the university believe that first-time home buyers have an average family income which is higher than this. Which of the following hypotheses would be appropriate for a significance test? Ho: u= 45, 000 Ha: µ# 45, 000 b. H.: u= 45, 000 Ha: µ> 45, 000 H.: u= 45, 000 Ha: u 45, 000 Ha: u = 45, 000 a. C. е.

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