A 95% confidence interval for population proportion p is 32.4% to 47.6%, the margin of error is: О а. 7.6% O b. 32.4% О с. 47.6% O d. 80% O e. 40%

Q: Find a 99% confidence interval for the population mean for the data set (120, 80, 83, 115, 95, 90,…

A: Solution-:

Q: If X = 114, α= 20, and n = 33, construct a 99% confidence interval estimate for the population mean,…

A: Given data:  Sample Mean = 114 Population standard deviation = 20 Sample size = 33 Confidence level…

Q: If n = 108, a = 29 and o = 2.6, construct a 91% confidence interval. Give your answers to three…

A: Since we know population standard deviation, use z-distribution to find z-critical value.…

Q: Construct the indicated confidence interval for the difference between population proportions p1 -…

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Q: A simple random sample of 5 observations from a normal distribution was taken, and the following…

A: Question 8) Solution: n= 5 Sample size  To find sample mean and sample standard deviation  x…

Q: If n = 28, ¯xx¯ = 49, and s = 19, construct a confidence interval at a 90% confidence level. Assume…

A: Given information- Sample size, n = 28 Sample mean, x-bar = 49 Sample standard deviation, s = 19…

Q: construct a confidence interval at a 98% confidence level.

A: Given : n=29 , X-bar=39  , s=11  , α=0.02 Since , the population standard deviation (σ) is unknown.…

Q: If Xbar=81​,S=20​,and n=36​,and assuming that the population is normally​ distributed, construct a…

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Q: if ue want a 96%. confidence nterval on populatron mean with a sample size of a3, find or 土

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Q: You may need to use the appropriate appendix table or technology to answer this question. What is…

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Q: Question 1: If X̅ = 100, ? = 25 ??? ? = 32, construct a 99% confidence interval estimate for the…

A: Answer - X̅ = 100,  s = 25,   sample size n = 32,                99% confidence interval        ⇒ α…

Q: The weights of four randomly and independently selected bags of potatoes labeled 20.0 pounds were…

A: Given data, 20.6​,21.3​,20.8​,and 21.2 pounds.   Mean x=20.975 Std.deviation s= 0.3304   n=4…

Q: sample of 40 observations is selected from a normal population where the population variance is 625.…

A: According to the given information in this questionThere are more than three subparts according to…

Q: An employee of the College Board analyzed the mathematics section of the SAT for 93 students and…

A: The correct alternative is, we will never know whether (28.255, 33.945) covers the true mean.

Q: ind a 95% confidence interval for the difference between the two proportions.   b) Is there a…

A: Let p1 and p2 be the two population proportions of people who said that it is serious.Given…

Q: Construct the confidence interval for the population mean y. C= 0.90, x=16.6, o= 10.0, and n= 80

A: Here, C=0.90, x=16.6, σ=10.0, and n=80.

Q: QUESTION 3 What would be the margin of error, E, for a 99% confidence interval created around a…

A: Confidence level (c) = 99% = 0.99Significance level (α) = 1 - 0.99 = 0.01 Standard error = 0.032

Q: If X 121, o =27, and n 38, construct a 95% confidence interval estimate of the population mean, u.…

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Q: If n = 17, ¯xx¯ = 33, and s = 6, construct a confidence interval at a 99% confidence level. Assume…

A: We have, If n = 17, x¯ = 33, and s = 6, alpha=1-0.99= 0.01 Therefore  Degrees of freedom= n-1=16…

Q: If the sample mean is 70 and the standard error of the sample mean is 8, what will be the 90%…

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Q: Suppose that a 95% confidence interval for a population p = the population proportion of men who…

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Q: If X=99​, S=7​, and n=64​, and assuming that the population is normally​ distributed, construct a…

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Q: 2. In a random sample of 150 drivers arrested for DUI (drunk driving), 90% were males. The 99%…

A: According to the given information, we have Total number of drivers arrested for DUI = 150 90% were…

Q: Construct the confidence interval for the population mean u.  c​= 0.95, x= 15.7, o= 7.0, and

A: c​= 0.95, x= 15.7, o= 7.0, and n= 90

Q: If the alpha level is .05, then the confidence level is ?

A: Given: alpha = 0.05 confidence level / significant level = 1 - alpha

Q: What is the 95% confidence interval for the difference in the population means using paired samples…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A survey found 195 of 250 randomly selected Internet users have high-speed Internet access at home.…

A: The sample proportion is computed as follows, based on the sample size N = 250N=250 and the number…

Q: Assume that a sample is being used to estimate a population mean μμ. If n = 19, x¯ = 43, and s = 3,…

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Q: Assume that you took a sample and calculated the sample mean as 100.you then calculated the lower…

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Q: Which type of confidence interval should you use in this situation? A sample of 6 adult elephants…

A: It is given that Mean = 12200Sample std. deviation = 200Sample size = 6Confidence level = 95%

Q: If n=41, ¯x=39, and s=16, construct a confidence interval at a 99% confidence level. Assume the data…

A: Given that  Sample size (n) = 41 Sample mean (x¯) = 39 Sample standard deviation (s) = 16 Confidence…

Q: Which estimate at a 95% confidence level most likely comes from a small sample? OA. 78% (14%) OB.…

A: The provided information is  α=0.05 The critical value is  z=1.96    (from statistical table)…

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

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Q: Find the critical value tc for a 95% confidence level when the sample size is 13.   A. 1.753   B.…

A: According to the given information, we have Sample size, n = 13 Confidence level = 95%