An advertisement agent computed 90%, 95%, 97%, and 99% confidence intervals for the mean lifetime of a smartwatch battery. Which interval is the one with 97% confidence level? O (131.1, 142.9) O (127.7, 146.3) O (129.9, 144.1) O (129.2, 144.8)
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Q: The upper limit of the 95% confidence interval is (rounded) O 73 O71 O 72 O74
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A: Given that, A sample of 20 SAT scores had standarddeviation s = 87.
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Q: Of 118 randomly selected adults, 34 were found to have high blood pressure. Construct a 95%…
A: Here, x =34 and n = 118.
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A: Given σ=18.8 , E = 1 , (1-α)100% = 99% α= 0.01 Zα2= 2.58 (Use Excel function =NORMSINV(0.005))
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Q: Out of 600 people sampled, 456 had kids. Based on this, construct a 95% confidence interval for the…
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Q: Insurance companies are interested in knowing the population percent of drivers who always buckle up…
A: Givensample size(n)=390x=293p^=xn=293390≅0.7513Confidence leve=86%
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Q: You randomly select a sample of n = 12. What is the appropriate value for t to compute a 99%…
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- A media research group uses samples of 6000 households to rank TV shows. The group reported that a news show had19% of the TV audience. What is the 95% confidence interval for this result? Find the 95% confidence interval. ___<p<___ ?Construct the confidence interval for the population mean u. c= 0.98, x= 16.4, o = 2.0, and n= 100 %3D ... A 98% confidence interval for u is (Round to one decimal place as needed.)Construct the confidence interval for the population mean u. c= 0.98, x= 4.2, o = 0.6, and n= 57 A 98% confidence interval for is | D. (Round to two decimal places as needed.)
- Express the confidence interval (13.8 %, 20 %) in the form of p ± E. % ± %Give a 98% confidence interval, for 12 given the following information. n₁ = 50, T1 = 2.12, 81 = 0.46 n2 0.36 1 35, T2 = 1.76, 82 0.65 decimal places. 子 Use Technology Rounded to 2A poll found that82%of a random sample of 1093adults said that they believe in ghosts. a. Determine the margin of error for a 99% confidence interval. E=
- Construct the confidence interval for the population mean p. c= 0.95, x= 5.7, o = 0.5, and n= 57 ... A 95% confidence interval for µ is ( D (Round to two decimal places as needed.)Construct the confidence interval for the population mean u. c= 0.95, x= 6.1, o = 0.6, and n = 40 A 95% confidence interval for u is ( D. (Round to two decimal places as needed.)Researchers asked two groups of people to construct a jigsaw puzzle. One group of 55 people, who listened to soft classical music while working, had a mean construction time of 45 minutes. Another group of 45 people, who worked in silence, had a mean construction time of 55 minutes. Assume the population standard deviations for the construction times for people listening to classical music and people working in silence are 9.5 minutes and 11 minutes, respectively. Find the upper bound of the 99% confidence interval for the difference in population construction times between people listening to classical music as they work and people working in silence. Let the people listening to classical music be the first sample, and let the people working in silence be the second sample. Assume the samples are random and independent. Assume that both the population distributions are normally distributed. Round your answer to two decimal places. 90% confidence=1.645 95% confidence=1.96…
- If n = 590 and ˆp = 0.94, construct a 95% confidence interval.Give your answers to three decimals __< p < __A survey asked, "How many tattoos do you currently have on your body?" Of the 1217 males surveyed, 183 responded that they had at least one tattoo. Of the 1098 females surveyed, 146 responded that they had at least one tattoo. Construct a 99% confidence interval to judge whether the proportion of males that have at least one tattoo differs significantly from the proportion of females that have at least one tattoo. Interpret the interval. Let p, represent the proportion of males with tattoos and p, represent the proportion of females with tattoos. Find the 99% confidence interval for p, - p2. The lower bound is The upper bound is (Round to three decimal places as needed.) Interpret the interval. O A. There is 99% confidence that the difference of the proportions is in the interval. Conclude that there is insufficient evidence of a significant difference in the proportion of males and females that have at least e tattoo. B. There is a 99% probability that the difference of the…Construct the confidence interval for the population mean u. c=0.98, x=16.5, o=4.0, and n=60. A 98% confidence interval for u is (___,___). (Round to one decimal place as needed.