7) State the confidence interval for problem #6. Round each to two decimal places. (Show how you set up and calculate this confidence interval.) 7)
Q: If n=19, x(x-bar)=32, and s=3, construct a confidence interval at a 90% confidence level. Assume the…
A: Mean = 32 Standard deviation = 3 Sample size = 19
Q: If n = 24, ¯xx¯ = 30, and s = 3, construct a confidence interval at a 98% confidence level. Assume…
A: Given: x~N(μ,σ)n=24x¯=30s=3α=0.02
Q: IF n < 30 AND T = SHOW HOW THE 100(1-2a) % CONFIDENCE INTERVAL FOR μ IS DERIVED
A: Given n<30, construc 100(1-2ɑ)% CI for population mean μ
Q: 95% of all confidence intervals computed as m ± 1.96(σm) will capture μ. True or false? Please…
A:
Q: If n=31, ¯xx¯(x-bar)=30, and s=7, find the margin of error at a 90% confidence level Give your…
A: Given,n=31x¯=30s=7degrees of freedom (df)=n-1df=31-1=30α=1-0.90=0.1α2=0.05t0.05(30)=1.697…
Q: The 95% confidence interval generally is: Select one: a. none of these. b. wider than the 99%…
A: Confidence level -95% Higher the confidence level, higher the width of the confidence interval.
Q: If n=20n=20, ¯xx¯=33, and s=15s=15, construct a confidence interval at a 80% confidence level. Give…
A:
Q: If n=31n=31, ¯xx¯=44, and s=16s=16, construct a confidence interval at a 98% confidence level. Give…
A:
Q: If n=320 and p' (p-prime) = 0.82, construct a 95% confidence interval. Give your answers to three…
A:
Q: There are many ways to construct a 2-sided 100(1 – a)% confidence interval for µ. In particular, if…
A: It is an important part of statistics. It is widely used.
Q: If n=23, ¯xx¯(x-bar)=31, and s=9, find the margin of error at a 99% confidence level Give your…
A: Solution
Q: If n=30, ¯xx¯(x-bar)=49, and s=4, find the margin of error at a 99% confidence level Give your…
A: Given,n=30x¯=49s=4degrees of freedom(df)=n-1df=30-1=29α=1-0.99=0.01α2=0.005t0.005(29)=2.756…
Q: If n=12, ¯xx¯(x-bar)=35, and s=5, find the margin of error at a 99% confidence level Give your…
A: Sample size = 12 Sample mean = 35 Sample standard deviation = 5
Q: If n=27, ¯xx¯(x-bar)=46, and s=7, construct a confidence interval at a 90% confidence level. Assume…
A:
Q: If n=14, ¯xx¯(x-bar)=44, and s=9, construct a confidence interval at a 98% confidence level. Assume…
A: Given data ; n =14 , x̄ = 44 , Standard deviation (s) = 9 To construct 98 % confidence interval.
Q: If n = 600 and ˆpp^ (p-hat) = 0.25, construct a 95% confidence interval.
A: Given that sample size is n = 600 And the sample proportion is 0.25 At 95% confidence level, the…
Q: If a 95% confidence interval contains 0, so will the 99% confidence interval. True False3
A: Solution: As the confidence level increases the margin of error increases. This leads to the…
Q: one with a 95% confidence level and the other with a 99.7% confidence level. Which interval is…
A: Confidence interval is probability, which refers that population parameter will fall within set of…
Q: If n=14, ¯xx¯(x-bar)=44, and s=3, find the margin of error at a 98% confidence level Give your…
A: Margin of error = The margin of error (MOE) expresses to the maximum expected differences between…
Q: 4. Ellie and Alec are each attempting to estimate the proportion of coffee drinkers who consume more…
A: Given that - Ellie and Alec each of them have obtained a random sample of coffee drinker and in each…
Q: The statement, “The 95% confidence interval for the population mean is (350, 400)”, is equivalent to…
A: Given that, The statement, “The 95% confidence interval for the population mean is (350, 400)”, is…
Q: result of 23% will differ no more than three percentage points in either direction from what would…
A: It is given that, in 19 cases out of 20,i.e., (95%) the overall result of 23% will differ no more…
Q: Suppose that you take 1000 simple random samples from a population and that, for each sample, you…
A: Given information Sample size n = 1000 Confidence interval = 95%
Q: Suppose Bob makes a 95% confidence interval and his result is (70, 90). True or false: We can tell…
A: Given Information: 95% confidence interval = (70,90)
Q: You want to make a 90% confidence interval for a population proportion with an error term no bigger…
A: Given Data : Margin of error: ME = 0.02 sample proportion: p̂ = 0.5…
Q: If n=15, ¯xx¯(x-bar)=33, and s=19, construct a confidence interval at a 80% confidence level. Assume…
A: Given' : sample mean xbar=33 sample size n=15 sample standard deviations s=14 then to find 80%…
Q: The definition of a 90% confidence interval is that we expect that close to 90% of a large number of…
A:
Q: Suppose that 175 heads and 225 tails resulted from 400 tosses of a coin. A. Find a 90% confidence…
A:
Q: 1. provide the process of establishing confidence interval step by step. 2. According to past…
A: SOLUTION; First we have to find a sample statistic. (eg. sample mean, sample proportion etc.) Then…
Q: One researcher finds a 95% confidence interval for a prevalence of heart disease in a population as…
A: We have given that 95% confidence interval is 26.2 percent with margin of error 4.2 percent 90%…
Q: If n=21n=21, ¯xx¯=49, and s=17s=17, construct a confidence interval at a 99% confidence level. Give…
A: The summary of statistics is, n=21,x¯=49, s=17 The degree of freedom is, df=n-1 =21-1 =20…
Q: If n = 340 and ˆp (p-hat) = 0.35, construct a 99% confidence interval. Give your answers to three…
A:
Q: If n=12, ¯xx¯(x-bar)=49, and s=2, find the margin of error at a 90% confidence level Give your…
A: Given n=12 sample mean=x¯=49 Sample standard deviation, s=2 Confidence interval=90% =0.90 Since, the…
Q: If a 90%, a 95% and a 99% confidence interval are foung for a population mean, describe how the 3…
A: Population mean CI for known population standard deviation is, CI=x¯±Zσnwhere,σ=population standard…
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=23, ¯xx¯(x-bar)=40, and s=12, construct a confidence interval at a 80% confidence level. Assume…
A:
Q: In 2013, the Pew Research Foundation reported that “45% of U.S. adults report they live with one or…
A: Given : 45% of U.S. adults report they live with one or more chronic conditions. standard error for…
Q: If n = 440 and ˆpp^ = 0.52, construct a 90% confidence interval. Give your answers to three…
A:
Q: Kit and Casey are each attempting to estimate the proportion of college students who can play at…
A: Given Information:- P(At least one musical instrument) = 0.35 Kit's confidence interval = (0.308,…
Q: If n=15, ¯xx¯(x-bar)=33, and s=15, construct a confidence interval at a 90% confidence level. Assume…
A: Confidence interval gives the range of values within the parameter of the population lies with a…
Q: Part a) Find the 68% confidence interval for the percentage of leaky diapers in Example 4.4.4. Note…
A: The diaper manufacturer, decides that the confidence interval obtained is too wide, at 16 percentage…
Q: IF n < 30 AND T = SHOW HOW THE 100(1-2a) % CONFIDENCE INTERVAL FOR IS DERIVED
A: If the sample size is less than 30 and the sample standard deviation is not known, one sample t-test…
Q: b. If many groups of 537 randomly selected Americans were surveyed, then a different confidence…
A: ANSWER:- 95% confidence interval means 95% confident contains true mean of the population. Means…
Q: If n=27, x¯(x-bar)=41, and s=3, construct a confidence interval at a 98% confidence level. Assume…
A:
Q: If n = 24, ¯xx¯ = 30, and s = 3, construct a confidence interval at a 98% confidence level. Assume…
A: Given information Sample mean (x̅) = 30 Sample standard deviation s = 3 Sample size n = 24 98%…
Q: If n=15n=15, ¯xx¯=43, and s=20s=20, construct a confidence interval at a 90% confidence level. Give…
A:
Q: If n=10, ¯xx¯(x-bar)=44, and s=3, find the margin of error at a 98% confidence level Give your…
A: Obtain the margin of error for a 98% Confidence interval The margin of error is obtained below: The…
Q: Suppose the length of a confidence interval is ten. If the point estimate is forty-five, what is the…
A: It is given that the length of the confidence interval is 10 and the point estimate is 45.
Q: If n = 380 and ˆ = 0.25, construct a 95% confidence interval. < p < (Give your answers to three…
A: Find z-critical value for 95% confidence level. Refer Standard normal table/Z-table OR use excel…
Q: if a 95% confidence intervalgivess 0.20 and 0.27, can we be 95% that the proportion is 22% accurate…
A: From the given information the correct interpretation of 95%confidence interval is We can be…
Please answer for question #7.
Step by step
Solved in 2 steps with 2 images
- What is meant by the sample space of an experiment?4. Raul is analyzing a set of data he collected and creating a confidence interval. If he chose to reduce the size of the sample and increase the level of confidence, how would that affect the confidence interval? Explain.A. The size of the confidence interval would decrease because Raul would be dividing by a larger z-score and multiplying by a smaller sample size.B. The size of the confidence interval would increase because Raul would be dividing by a smaller z-score and multiplying a larger sample size.C. The size of the confidence interval would increase because Raul would be multiplying by a larger z-score and dividing by a smaller sample size.D. The size of the confidence interval would decrease because Raul would be multiplying by a smaller z-score and dividing by a smaller sample sizeA statistics student wants to conduct a study to determine the proportion of workers in Cititon who commute to another town for work. If the student wants a 90% confidence interval with a margin of error of 2%, how many workers should be in her sample?
- A member of the Lottery Commission requests a 90% confidence interval estimate but with a smaller margin of error. How can we get a smaller margin of error using 90% confidence? A) Take a smaller sample because smaller samples result in smaller margins of error. B) Take a larger sample because larger samples result in smaller margins of error. C) Take another sample of the same size because you might get lucky and get a smaller margin of error. D) Take a sample of the same size from the adults in Ohio instead of the entire country. Then the population will be smaller and this will give a smaller margin of error.If two people used the same data and one person made a 90% confidence interval and the other person made a 95% confidence interval for p, which interval would be more narrow? is it; a. The 90% Confidence interval b. The 95% Confidence interval c. We cannot tell from the information alone.Political survey- A political analyst found that 43% of 300 randomly seleted republican voters feel that the federal government has too much power. Find the 95% confidence interval of the population proportion of Republican voters who feel this way.
- Through polling, it was estimated that the percent of people who will vote for a particular candidate in an upcoming election is 36.2%. If the margin of error is 3.5, give the confidence interval for the percentage of people who will vote for the candidate in the upcoming election.% to %1. Suppose ten years ago, 40% of Americans used coupons.If the 95% confidence interval of the Americans used coupon is between 21% and 39% in the current year, what would you conclude compared with ten years ago? 2. {Narrative: Graduate} What is 95% of the confidence interval of the proportion of athletes who graduate within 6 years? 3. In the American judicial system, you must presume that the defendant is innocent unless there is enough evidence to conclude that he/she is guilty. What are the null and alternative hypotheses in this situation?