Critical Thinking. In Exercises 17–28, use the data and confidence level to construct a confidence
25. Lipitor In clinical trials of the drug Lipitor (atorvastatin), 270 subjects were given a placebo and 7 of them had allergic reactions. Among 863 subjects treated with 10 mg of the drug, 8 experienced allergic reactions. Construct the two 95% confidence interval estimates of the percentages of allergic reactions. Compare the results. What do you conclude?
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- I'm struggling with this problem, please, help me?arrow_forwardCritical Thinking. In Exercises 17–28, use the data and confidence level to construct a confidence interval estimate of p, then address the given question. Lipitor In clinical trials of the drug Lipitor (atorvastatin), 270 subjects were given a placebo and 7 of them had allergic reactions. Among 863 subjects treated with 10 mg of the drug, 8 experienced allergic reactions. Construct the two 95% confidence interval estimates of the percentages of allergic reactions. Compare the results. What do you conclude?arrow_forwardDetermine the sample size for a on-line survey with a variability of 30% and a 95% confidence interval? What sample size would you need for a 99% confidence interval? a 90% confidence interval?arrow_forward
- Can you help me with this question from my Business Statistics class?arrow_forwardAccording to the February 2008 Federal Trade Commission report on consumer fraud and identity theft, 23% of all complaints in 2007 were for identity theft. In that year, Alaska had 321 complaints of identity theft out of 1,432 consumer complaints ("Consumer fraud and," 2008). Does this data provide enough evidence to show that Alaska had a lower proportion of identity theft than 23%? Test at the 5% level. viii) Comparing p-value and α value, which is the correct decision to make for this hypothesis test? A. Reject H B. Fail to reject Ho C. Accept Ho D. Accept HA Enter letter corresponding to correct answer. (ix) Select the statement that most correctly interprets the result of this test: A. The result is statistically significant at .05 level of significance. Evidence supports the claim that the proportion of complaints due to identity theft in Alaska is less than 23%. B. The result is statistically significant at .05 level of significance. There is not…arrow_forwardHeights are measured, in inches, for a sample of undergraduate students, and the five-number summary for this data set is given in the table below. From this five-number summary, what can we conclude? minimum=59 Q1=64 median=67 Q3=69 maximum= 74 1. 50% of the heights are between 59 inches and 74 inches. 2. 75% of the heights are below 64 inches. 3. 25% of the heights are above 69 inches. 4. 25% of the heights are between 67 and 74 inches. 5. 50% of the heights are between 59 and 69 inches.arrow_forward
- Plzzz explain.arrow_forwardWages of workers Without a High School Diploma. SmartAsset reports that the average weekly earnings for workers who have not received a high school diploma are $493 in 2018. Suppose you would like to determine if the average weekly earnings for workers who have received a high school diploma is significantly greater than the average Supplementary Exercises 465 weekly earnings for workers who have not received a high school diploma. Data providing the weekly pay for a sample of 50 workers who have received a high school diploma are available in the file WeeklyHSGradPay. These data are consistent with the findings reported by SmartAsset. a. Repeat the hypothesis test using the critical value approach. b. e) Calculate the probability of a type II error when the mean weekly pay for workers who have received a high school diploma is $900. Weekly Earnings 687.73 543.15 789.45 442.26 684.85 661.43 478.30 629.62 486.95 786.47 652.15 652.82 669.81 641.13…arrow_forwardFind part Barrow_forward
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