10. Under the normal curve, the middle part represents A. Confidence level B. Confidence interval C. Acceptance region D. All of these 11. In conducting hypothesis test, our point of investigation or the hypothesis that we are testing is always the a. claim b. null c. alternative d. evidence 12 The critical value determines the regions. c. tail of the curve a. rejected and non- b. area under the rejected regions d. hypothesis to be proven curve

10. Under the normal curve, the middle part represents A. Confidence level B. Confidence interval C. Acceptance region D. All of these 11. In conducting hypothesis test, our point of investigation or the hypothesis that we are testing is always the a. claim b. null c. alternative d. evidence 12 The critical value determines the regions. c. tail of the curve a. rejected and non- b. area under the rejected regions d. hypothesis to be proven curve

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Description: 10. Under the normal curve, the middle part representsA. Confidence levelB. Confidence intervalC. Acceptance regionD. All of these11. In conducting hypothesis test, our point of investigation or the hypothesis that we aretesting is always thea. clai

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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32. Touch Your Nose With Your Tongue Find the sample size needed to estimate the percentage of adults who can touch their nose with their tongue. Use a margin of error of 2 percentage points and use a confidence level of 90%. a. Assume that p and à are unknown. b. Assume that a previous study showed that 10% of adults can touch their nose with their tongue (based on data from Onedio). c. Does the use of the results from the previous study have much of an effect on the sample size?
2. What do you call a single value that may refer to a parameter value? A. Z-statistics B. Interval estimate C. Point estimate D. T-statistic 3. What refers to the closeness of the estimate to the true value? А. Ассuracy B. Precision C. Efficiency D. Unbiased 4. Which of these illustrates confidence interval? A. 0.95 B. 99% С. 100 D. 54-59
Provide a significance level and explain how the confidence levels, C, are different for one and two tail tests. Provide pictures (with areas labeled) to support each C.
I need help with these problems. Could you please explain everything that I should know? Student 1 Student 2 Student 3 Student 4 Student 5 Student 6 Student 7 Student 8 Student 9 Height (inches) 63 67 68 68 69 70 71 74 75 Weight (lbs) 140 160 140 149 165 125 235 260 190 ∝=0.05 Construct a confidence interval to estimate the mean weight. 2. Test a claim that the mean height of WCU students is not equal to 64 inches using the p-value method or the traditional method. ∝=0.05 State H0 and H1 Find the p-value or critical value(s). (Use the tables) Draw a conclusion.
Need help of the Find the Confidence Interval section
Determine whether the following statements are True or False: If we increase the confidence level C, then the width of the CI decreases, i.e., the CI becomes narrower. (Hint: think about what happens to the margin of error m) Suppose the mean of a population µ = 100. If we found that the margin of error is m = 2 for level of confidence 98%, then we can be 98% confident that a sample mean (computed from a sample of the same size used to compute m) is in the interval (98, 102).
cutive pusu 8. A survey will be conducted on the use of social media among senior high school students. a. How large a sample must be obtained if the researchers want to be 95% confident that the maximum error will not exceed 5%? b. Suppose the researchers conducted the survey involving 500 senior high school students and 400 responded that they have social media accounts. Give the 99% confidence interval for the true proportion of senior high school students who have social media accounts.
16. Which of these values is a parameter? A. X В.Х C. H D. z 17. What do you call a single value that may refer to a parameter value? A. z-statistic B. t-statistic C. interval estimate D. point estimate 18. What refers to the closeness of the estimate to the true value? A. accuracy B. precision C. efficiency D. unbiased 19. Which of these illustrates confidence interval? А. 54 — 59 В. О.95 C. 99% D. 100
10 The interval estimate is, a 12.2 13.4 b 11.8 13.8 c 11.1 14.5 d 10.0 15.6
Answer all parts of number 2 and show your work.
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