Question 5 of 6 <View PoliciesCurrent Attempt in Progress-12 E :Determine the sample size necessary to estimate p for the following information.a. E = 0.03, p is approximately 0.30, and confidence level is 96%b. E is to be within 0.02, p is unknown, and confidence level is 95 %c. E is to be within 3%, p is approximately 53%, and confidence level is 90%d. E is to be no more than 0.01, p is unknown, and confidence level is 99%Appendix A Statistical Tables(Round answers to O decimal places, eg. 5,125.)a. Sample size =b. Sample size =c. Sample size =d. Sample size =Save for LaterAttempts: 0 of 3 used Submit Answer62.67712stv .MaBICommHs2G Search or type URLesc&%23$41234PRTYQWEtabJKGHFSM

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A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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The mean mark on a state-administered mathematics exam by a 10th grade class in Smalltown, Wisconsin, was 95%, while the mean mark on the same exam by 10th grade students in the entire state of Wisconsin was reported to be only 78%. This suggests that the mean can be __________. a a parameter or a statistic b a parameter only c a statistic only d neither a parameter nor a statistic
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A&B&C&D
Q.1 At the end of every school year, the state administers a reading test to a sample of 36 third graders. The school system has 20,000 third graders, half boys and half girls. The results from last year's test are shown in the table below. Stratum Boys Girls Mean score 80 70 Standard deviation 10.27 6.66 This year, the researchers plan to use a stratified sample, with one stratum consisting of boys and the other, girls. Use the results from last year to answer the following questions? . To maximize precision, how many sampled students should be boys and how many should be girls? . What is the mean reading achievement level in the population? Compute the confidence interval. . Find the margin of error.
Determine the sample size necessary to estimate p for the following information. a. E = 0.04, p is approximately 0.30, and confidence level is 96% b. E is to be within 0.03, p is unknown, and confidence level is 95% c. E is to be within 5%, p is approximately 56%, and confidence level is 90% d. E is to be no more than 0.02, p is unknown, and confidence level is 99% Appendix A Statistical Tables (Round answers to 0 decimal places, e.g. 5,125.) a. Sample size = b. Sample size = c. Sample size d. Sample size
Aspirin III: Decision and Conclusion Regarding the experiment in the data frame Aspirin from the abd package, the researchers wanted to know whether or not taking aspirin affects one's risk of developing cancer. Recall that they defined their parameters as follows: p1 = the proportion of ALL individuals who would develop cancer, if all of them were to take aspirin like the subjects in the Aspirin group did. p2 = the proportion of ALL individuals who would develop cancer, if all of them were to take a placebo, like the subjects in the placebo group did. They ran the code for a two-sided significance test and got the following results: ## ## ## Inferential Procedures for the Difference of Two Proportions p1-p2:## cancer grouped by treatment ## ## ## Descriptive Results:## ## yes n estimated.prop## Aspirin 1438 19934 0.07214## Placebo 1427 19942 0.07156## ## ## Inferential Results:## ## Estimate of p1-p2: 0.0005805 ## SE(p1.hat - p2.hat): 0.002586 ## ##…
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Exhibit 9-5 n = 16 HO: u z 80 x = 75.607 Hạ: u < 80 o = 8.246 Assume the population is normally distributed. 3. Refer to Exhibit 9-5. The test statistic equals .53 -2.131 -.53 2.131
Need help with parts C & D The proportion of Americans who have frequent migraines is 15.2% according to the CDC. An acupuncturist claims that her treatment can reduce this figure significantly. A random sample of 191 Americans is administered the acupuncturists treatment and 25 report experiencing migraines.a. State Hypotheses to the scenario using the correct symbols. b. What is the sample proportion? (Round to 2 decimal places) ˆpp^= c. Suppose the P-value is calculated to be 0.0318What would your decision be for this test using α=α= 0.025? fail to reject the null accept the null reject the null d. Write a conclusion in terms of the acupuncturist's claim. Use the model provided by the instructor. Assume no errors were made.
I need help with parts c-e
Question Help Y 12.2.79 The number of successes and the sample size for a simple random sample from a population are given below. x = 8, n = 40, Ho:p=0.4, H2: p< 0.4, a = 0.01 a. Determine the sample proportion. b. Decide whether using the one-proportion z-test is appropriate. c. If appropriate, use the one-proportion z-test to perform the specified hypothesis test. Click here to view a table of areas under the standard normal curve for negative values of z. Click here to view a table of areas under the standard normal curve for positive values of z. c. Determine the test statistic, if appropriate. Select the correct choice below and, if necessary, fill in the answer box to complete your answer. z= - 2.58 (Round to two decimal places as needed.) B. The one-proportion z-test is not appropriate. Identify the critical value(s), if appropriate. Select the correct choice below and, if necessary, fill in the answer box to complete your answer. A. ±Za/2 (Round to two decimal places as…

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