A study of 420,019 cell phone users found that 0.0321% of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0314% for those not using cell phones. Complete parts (a) and (b). a. Use the sample data to construct a 95% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. %
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A: Givenx=139n=420069p^=xn=139420069=0.00033α=1-0.90=0.10α2=0.05zc=z0.05=1.6449 (from z table)
Q: A study of 420,019 cell phone users found that 140 of them developed cancer of the brain or nervous…
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A: Given x=134 n=420088 Significance level =Alpha=1- confidence=1-0.95=0.05
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A: Given: n=420,092x=130 The sample proportion is, p^=xn=130420,092=0.0003 From the Standard Normal…
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Q: *** a. Use the sample data to construct a 90% confidence interval estimate of the percentage of cell…
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Q: A study of 420,054 cell phone users found that 139 of them developed cancer of the brain or nervous…
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Q: a. Use the sample data to construct a 95% confidence interval estimate of the percentage of cell…
A: Given that Sample size n = 420078 Number of cell phone user who developed cancer, X = 130 The…
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A: Given: n = 420,063 p = 0.0323 Formula Used: Confidence Interval = p ± Zα/2p(1-p)n
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A: sample size(n)=420098sample proportion()=0.0324%=0.000324
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A: Given,n=420010x=132p^=xnp^=132420010=0.000311-p^=1-0.00031=0.99969α=1-0.90=0.1α2=0.05Z0.05 =1.645…
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A: Solution: Given information: n= 420010 Sample size p^=0.0319100= 0.000319 Sample Proportion
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Q: A study of 420,078 cell phone users found that 134 of them developed cancer of the brain or nervous…
A: It is given that x =134 and n=420,078.
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A: From the provided information, Sample size (n) = 420,071 136 of them developed cancer of the brain…
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A: Given, n = 420007 X = 136 p^ = Xn = 136420007 = 0.000324 Confidence level = 0.90 To find, a. 90%…
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- A study of 420,098 cell phone users found that 0.0324% of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0335% for those not using cell phones. Complete parts (a) and (b). a. Use the sample data to construct a 95% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system Do not round until the final answer. Then round to three decimal places as needed.] Rstudy of 420,077 cell phone users found that 133 of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0236% for those not using cell phones. Complete parts (a) and (b). a. Use the sample data to construct a 90% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system.A study of 420,048 cell phone users found that 137 of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0256% for those not using cell phones. Complete parts (a) and (b). a. Use the sample data to construct a 90% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. enter your response here%<p<enter your response here% (Round to three decimal places as needed.) b. Do cell phone users appear to have a rate of cancer of the brain or nervous system that is different from the rate of such cancer among those not using cell phones? Why or why not? A. No, because 0.0256% is included in the confidence interval. B. Yes, because 0.0256% is included in the confidence interval. C. Yes, because 0.0256% is not included in the confidence interval. D. No, because 0.0256% is not…
- A Gallup poll of 1487 adults showed that 43% of the respondents have Facebook pages. Construct a 95% confidence interval for the proportion of adults who have a Facebook page.A study of 420,092 cell phone users found that 134 of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0322% for those not using cell phones. Complete parts (a) and (b). a. Use the sample data to construct a 95% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. %A study of 420,082 cell phone users found that 136 of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0415% for those not using cell phones. Complete parts (a) and (b). a. Use the sample data to construct a 90% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. %In a survey of 1076 adults, a poll asked, "Are you worried or not worried about having enough money for retirement?" Of the 1076 surveyed, 551 stated that they were worried about having enough money for refirement. Construcd a 99% confidence interval for the proportion of adults who are worried about having enough money for retirement. A 99% confidence interval for the proportion of adults who are worried about having enough money for retirement is ( (Use ascending order. Round to four decimal places as needed) Question Help Enter your answer in each of the answer boxes. P Type here to search 4 00 ENG 414/2021 DELL F12 VYZ Priscr Delehes Seers F10 FO F7 F2 FS Esc F1 Fa SAL 40 BackspuMA %23 5S 13 T R Tab 10 Enter K D F S A S Caps Lock Shift Ctri Alt Alt Fr CtriA study of 420 comma 026 cell phone users found that 140 of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0434 % for those not using cell phones. Complete parts (a) and (b). a. Use the sample data to construct a 90% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. b. Do cell phone users appear to have a rate of cancer of the brain or nervous system that is different from the rate of such cancer among those not using cell phones? Why or why not?In a study of treatments for very painful "cluster" headaches,... Find the 90% confidence interval using technology.A study of 420,031 cell phone users found that 136 of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0316% for those not using cell phones. Complete parts (a) and (b). a. Use the sample data to construct a 90% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. %The percent defective for parts produced by a manufacturing process is targeted at 4%. The process is monitored daily by taking samples of sizes n = 160 units. Suppose that today's sample contains 14 defectives. Determine a 88% confidence interval for the proportion defective for the process todayHomechooling has become very popular in the United States, and many colleges try to attract students from this group. Evidence suggests that approximately 90% of all homeschooled children attend college. To check this claim, a random sample of 208 homeschooled children was obtained, and 180 of them were found to have attended college. The researcher wishes to determine whether the proportion of homeschool children who attend college is different from 0.90. Test an appropriate hypothesis and state your conclusion. Make sure to state and check all conditions and state your conclusion in context.SEE MORE QUESTIONSRecommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
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