If [330, 610] is a confidence interval for the population mean. Find the margin of eror. Select one: a. 140 O b. 130 O c. 120 O d. 110

Q: If you want to make a confidence interval for the mean with the TI-84, which of the following…

A: Given that,  The sample standard deviation(s) is known The function of Z-test is not correct because…

Q: Suppose you have 67 samples with sample standard deviation 2.5. A 99% confidence interval for the…

A: The sample size n is 67.

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: Construct the confidence interval for the population mean mean μ.  c=0.90​, x (x-bar)=16.2​, σ=10.0…

A: The 90% confidence interval for the population mean µ is calculated as follows:

Q: If n = 220,p = 0.4,then what will be the 87.4% confidence interval for the population proportion?

A:

Q: Find a 95% confidence interval for a mean, µ, where n = 324, x̄ = 2.7, s = .91, and se = .06.

A: Given: n = 324, x̄ = 2.7, s = .91, se = .06.

Q: Construct the indicated confidence interval for the population mean p using the t-distrib c=0.90, x=…

A: Solution: Given information: n= 9  Sample size x= 13.3  Sample mean s=2.0 Sample standard…

Q: If n = 230 and X = 184, construct a 99% confidence interval for the population proportion, p.Give…

A: Given data n = 230 x = 184 sample proportion

Q: Determine the margin of error for a confidence interval to estimate the population mean with n = 21…

A: n = 21  s​ = 12.6 confidence interval = 80%.

Q: If n=20, (x-bar)=D46, and s=6, find the margin of error at a 95% confidence level Give your answer…

A: We have given that,  Sample size (n) = 20,  sample(x-bar) = 46,  standard deviation (s) = 6 We wil…

Q: If 1850, 1970 is a confidence interval for a population mean. Find the value of the point estimator…

A:

Q: Construct a 95​% confidence interval to estimate the population mean when x=133 and s​ = 35 for…

A:

Q: Suppose you have 62 samples with sample standard deviation 4.4. A 99% confidence interval for the…

A: The confidence interval is an interval of estimating the unknown value of the population parameter,…

Q: If X = 66, S = 16, and n = 64, and assuming that the population is normally distributed, construct a…

A: Given data: Sample mean = 66 Sample standard deviation = 16 Sample size = 64 Confidence level  = 95%…

Q: Use the given confidence interval to find the margin of error and thr sample mean. (5.42, 8.56)

A: Obtain the value of margin of error using the confidence limits.   The value of the margin of error…

Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A: According to the given information, we have Confidence interval = (0.690, 0.718)

Q: If n = 330 and X = 264, construct a 95% confidence interval for the population proportion, p. %3D…

A: From the provided information, Confidence level = 95% Sample size (n) = 330, x = 264 Sample…

Q: If n=590 and p=0.93, construct a 90% confidence interval.

A: Express the expression for the confidence interval. C.I=p±Z*p(1-p)n Here, Z* is the critical value .…

Q: A 95% confidence interval for mean was found to be (18.54, 21.22). What was the margin of error? O…

A: Given: confidence interval ( 18.54 , 21.22 ) Need to find margin of error(ME) .

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

A:

Q: FIND t a n = 15 for the 98% confidence interval for the mean.

A: Provided information that, n=15 Alpha (α)=1-0.98=0.02 α/2=0.01

Q: If n = 180 and X = 144, construct a 99% confidence interval for the population proportion, p. Give…

A:

Q: c. Find the confidence interval for the population mean with confidence level of 99%

A:

Q: In a random sample of 80 teenagers, the average number of texts handled in a day is 50. The 96%…

A: Given information: n = 80 μ=50 96% confidence interval for the mean number of texts handled by teens…

Q: Use the given degree of confidence and sample data to construct a confidence interval for the…

A: It is given that n=195 and x=162. The sample proportion is 162/195 = 0.8308 The sample size is 195…

Q: If n = 280 and X = 224, construct a 99% confidence interval for the population proportion, p. Give…

A: Given: X=224n=280 CI=99% Formula: P¯±zα/2P^1-P^n

Q: If X=135, a=29, and n = 34, construct a 99% confidence interval estimate of the population mean, μ.…

A:

Q: A 99% confidence interval for a population mean was reported to be 140 to 150. If population…

A: It is given that the 99% confidence interval for a population mean is 140 to 150. The population…

Q: Use the Student's t distribution to find te for a 0.95 confidence level when the sample is 29. Step…

A: Given that the sample size is 29 and the confidence level is 0.95. That is, c=0.95 and n=29…

Q: If n = 220 and X = 176, construct a 95% confidence interval for the population proportion, p. Give…

A:

Q: (d) How many subjects are needed to estimate the mean number of books read the previous year within…

A: (d)

Q: Find a Confidence interval for the true Population Proportions if n = 30,        x = 75, and the…

A: From the given information, X=75 and n=30.

Q: is: n=217, x 26.5 hg, s= 6.1 hg. Construct a confidence interval estimate of the mean. Use a 99%…

A: Given that  Sample size(n) = 217 sample mean (x¯) = 26.5 Sample standard deviation (s) = 6.1…

Q: If you want to make a confidence interval for the mean with the TI-84, which of the following…

A: For the given statement Select the correct choice ?

Q: use the given degree of confidence and sample date to contruct a confidence interval for the…

A: Sample size = n = 124 Sample number of events = x = 20 Sample proportion = p̂ = x/n = (20/124) =…

Q: f X=142​, σ=20​, and n=36​,construct a 99​% confidence interval estimate of the population​ mean, μ

A: Given that  sample mean (X) = 142 Population standard deviation (σ) =20​  Sample size (n) =36…

Q: If X = 143, o = 29, and n = 35, construct a 95% confidence interval estimate of the population mean,…

A:

Q: If n=570 and ˆpp^ (p-hat) =0.89, find the margin of error at a 95% confidence levelGive your answer…

A: It is given that the value of n is 570, p hat is 0.89 and the confidence level is 0.95.Here,

Q: If X=68​, σ=14​, and n=66​, construct a 95​% confidence interval estimate of the population​ mean, μ

A:

Q: Suppose 600 students were surveyed regarding their GPAs. The average GPA was found to be 2.75. Using…

A: In this question we have to find the Margin of error if the standard deviation is 0.45.

Q: If X-bar = 125, σ = 24, and n = 36, construct a 99% confidence interval estimate for the population…

A: Given: X-bar = 125, σ = 24, n = 36.

Q: If [1740, 1850] is a confidence interval for a population mean. Find the margin of error. Select…

A:

Q: what sample size should a researcher take if he wants to estimate a population proportion to be 2%…

A: From the given information,   Margin error = 0.02 Assume sample proportion = 0.5   Critical value:…

Q: Example : In the group of 345 children surveyed, the sample mean was 11.3 and the standard deviation…

A:

Q: If n = 550 and X = 440, construct a 90% confidence interval for the population proportion, p. Give…

A: Given information:Total number of trials (n) = 550Number of success (X) = 440Confidence level = 0.90

Q: If N = 25, ?̅= 135, s = 24 and assuming that the population is normally distributed, construct a 95%…

A: Given : Sample mean = x¯ = 135 Sample standard deviation = s = 24 Sample size =n= 25 t critical…

Q: If X=80​, σ=11​,and n=62​,construct a 95​% confidence interval estimate of the population​ mean, μ.…

A: Given,sample size(n)=62sample mean(x¯)=80standard deviation(σ)=11α=1-0.95=0.05α2=0.025Z0.025=1.96…

Q: If [1740, 1850] is a confidence interval for a population mean. Find the value of the point…

A: