If n=14, (x-bar)=37, and s=7, construct a confidence interval at a 98% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place. > 1 >

Q: A random sample of 300 college freshmen found that 112 of them own an iPhone.  Find a 95% confidence…

A: Given, Favorable Cases XX = 112112 Sample Size NN = 300300

Q: If n = 100 and p (p-hat) = 0.9, construct a 95% confidence %3D interval. Give your answers to three…

A: Givensample size(n)=100p^=0.9α=1-0.95=0.05α2=0.025zc=zα2=z0.025=1.96   (from z table)

Q: If n = 480 and p (p-hat) = 0.95, construct a 99% confidence interval. Give your answers to three…

A: We solve first mean confidence interval.

Q: If n=30, ¯xx¯(x-bar)=43, and s=16, construct a confidence interval at a 98% confidence level. Assume…

A:

Q: If n=30, (x-bar)=38, and s=8, construct a confidence interval at a 90% confidence level. Assume the…

A:

Q: If n = 600 and p (p-hat) = 0.7, construct a 95% confidence interval. Give your answers to three…

A: It is given that, n = 600 and p (p-hat) = 0.7. we have to find the 95% confidence interval for true…

Q: If n = 340 and p (p-hat) 0.05, construct a 90% confidence interval. %3D Give your answers to three…

A:

Q: Give a real life example of how confidence intervals are used.

A: Solution-: We want to get a real life example of how confidence intervals are used.

Q: If n=31, (x-bar)=49, and s=3, construct a confidence interval at a 80% confidence level. Assume the…

A: Given, Sample size = 31 Sample mean = 49 Sample standard deviation = 3   Since the population…

Q: If n=24, ¯ x x ¯ (x-bar)=33, and s=13, construct a confidence interval at a 99% confidence level.…

A:

Q: If n=12, (x-bar)=33, and s=16, construct a confidence interval at a 80% confidence level. Assume the…

A:

Q: Assume that population mean is to be estimated from the sample described. Use the sample results to…

A: Given95% confidence interval N=361 x = 59.1 seconds. z= 4.9 SecondsFind the margin of error?

Q: Use the given data to construct a confidence interval of the requested level. X = 178, N=531,…

A: Given : Sample Size, n = N = 531 Number of successes, x = 178

Q: 13, ¤(x-bar)=39, and s=16, construct a confidence interval at a 90% confidence level. Assume the…

A: From the given information, n=13 x-bar=39 s=16 Confidence level=90% Significance level=10%…

Q: You want to get a 95% confidence interval for the difference between the percentage of females with…

A:

Q: If n=15, ¯xx¯(x-bar)=40, and s=9, construct a confidence interval at a 98% confidence level. Assume…

A:

Q: If n = 41, ã=30, and s = 6, construct a confidence interval at a 80% confidence level.

A: It is given that Sample size n = 41 Sample mean = 30 Sample SD s = 6 The critical value of t at df =…

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 100…

A: According to the given information, we have Out of 100 adult residents sampled, 88 had kids. 99%…

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 600…

A: Solution

Q: If n=28, (x-bar)=45, and s-8, construct a confidence interval at a 99% confidence level. Assume the…

A: Given that.  Sample size n =28 Sample mean=45 Standard deviation =8

Q: If n=160 and X = 128, construct a 90% confidence interval. Give your answers to three decimals  <…

A:

Q: If n = 460 and p (p-hat) = 0.6, construct a 90% confidence interval. Give your answers to three…

A: Given:

Q: If n = 530 and X = 424, construct a 99% confidence interval for the population proportion, p. Give…

A:

Q: If n = 81, -45, and s to one decimal place. = 8, construct a confidence interval at a 90% confidence…

A:

Q: You have a random sample of 30 mice, the mean of the number of pounds that they were eating was 5…

A: A confidence interval is a type of estimate computed from the statistics of the observed data. This…

Q: If n=25, z-46, and s=5, construct a confidence interval at a 95% confidence level. Assume the data…

A:

Q: All else constant, a 90% confidence interval for u will be wider than a 95% confidence inter True…

A: The confidence levels are 0.90 and 0.95.

Q: If n = 100 and p̂ (p-hat) = 0.4, construct a 95% confidence interval.

A: To find the 95% confidence interval for the population proportion. Given that,…

Q: A national polling organization surveyed 1000 Americans and found that 350 admitted to being guilty…

A: Given values, n = 1000 x = 350 Significance level = 0.10 Calculate z

Q: If n=13, ¯xx¯(x-bar)=37, and s=9, construct a confidence interval at a 80% confidence level. Assume…

A: Givenn =13x = 37s=9confidence interval =80%

Q: If n=30, (x-bar)=45, and s=13, construct a confidence interval at a 95% confidence level. Assume the…

A: We have given that,  Sample mean (x̄) = 45, sample size (n) = 30 and standard deviation (s) = 13…

Q: If n=21, (x-bar)=37, and s=3, construct a confidence interval at a 90% confidence level. Assume the…

A: Given Information: Sample size n=21 Sample mean x¯=37 Sample standard deviation s=3 Confidence level…

Q: A recent study of over 1000 parents on cyberbullying showed that a 95% confidence interval of…

A: From the given information, 95% confidence interval of proportion of kids who faced bullying in…

Q: If n = 11,(x -bar)= 31, and s = 19, construct a confidence interval at a 99% confidence level.…

A:

Q: Out of 300 people sampled, 135 received flu vaccinations this year. Based on this, construct a 95%…

A: According to the given information, we haveTotal number of people sampled = 300135 received flu…

Q: Use the given data to construct a confidence interval for the population proportion  p  of the…

A: The objective of this question is to construct a confidence interval for the population proportion p…

Q: A random sample of 300 college freshmen found that 112 of them own an iPhone. Find a 95% confidence…

A: Let n be the random sample , X be the number of own iPhone  Given n=300, X=112  Construct 95% CI for…

Q: Find the margin of error at a 80% confidence level for estimating the population mean if n = 15, x =…

A: Given: Sample size n = 15 Sample mean X = 44 Sample standard deviation s = 10 Confidence level = 80%…

Q: Use the given confidence interval to find the margin of error and the sample mean. (11.3,21.1) The…

A: