Given a sample size of 200 with a mean of 80 and the population standard deviation is found to be 35 having a 96% confidence level. What is the length of the confidence interval? A. 10.146 B. 14.543 C. 15.234

Q: produce a wider confidence interval for a population mean: a 95% level of confidence or an 85% level…

A: We have to determine which confidence level is wider.

Q: Which of the following would increase the width of a confidence interval for a population mean?

A:

Q: Construct a 90% confidence interval to estimate the population mean using the accompanying data.…

A: Given that  Sample mean (x¯) = 85 Population standard deviation (σ) = 20 Sample size (n) = 16…

Q: A confidence interval was found to be (2.4, 7.9). What was the point estimate? O A. 5.27 O B. 5.2 O…

A: Given confidence interval is (2.4 , 7.9)Upper limit =7.9Lower limit =2.4

Q: 2. construct a 95% confidence interval for the population mean. Assume the population has a normal…

A: given data sample size (n) = 20sample mean ( x¯ ) = 3120sample standard deviation (s) =67795% ci for…

Q: The foot lengths of a random sample of 53 men had a mean of 27 cm and a standard deviation of 2 cm,…

A: Solution-:   Given: n1=53 (men), n2=100 (women), x1¯=27, x2¯=23.5, s1=2, s2=2, α=0.05 We want to…

Q: A. Find the confidence intervals for the population mean from the given data. 1. x = 5.8, n = 36, o…

A: as per Bartleby guideline expert have to answer first question only dear students please upload…

Q: Construct the indicated confidence interval for the population mean . Assume c = 0.98, = 101.3, =…

A:

Q: If [330, 610] is a confidence interval for the population mean. Find the margin of eror. Select one:…

A: The upper limit of the confidence interval is (U) = 610 The lower limit of the confidence interval…

Q: Which of the following describes the function of a confidence interval? Select one: a. It uses a…

A: Given Options, a. It uses a sample mean to estimate the population mean b. It uses a population mean…

Q: A confidence interval for a population mean has a margin of error of 2.2.   a. Determine the length…

A: a) Given margin of error=2.2 Length=2*margin of error=4.4 The length of the confidence interval is…

Q: If n = 570 and X = 456, construct a 90% confidence interval for the population proportion, p.Give…

A:

Q: A confidence interval for a population mean has a margin of error of 2.2. a. Determine the length of…

A: Given information Margin of error E = 2.2 Sample mean x-bar = 53.5

Q: Find ??/2 for the 93% confidence interval. Select one: A. 1.83 B. 1.81 C. 1.80 D. 1.82

A: Solution: Given information: Confidence level = 93% = 0.93 α=1-confidence level α=1-0.93= 0.07…

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

A:

Q: The mean height of women in a country​ (ages 20−​29) is 64.1 inches. A random sample of 75 women in…

A: Given, The mean height of women in a country​ (ages 20−​29 ) is 64.1 A random sample of  75 that is…

Q: Suppose someone wanted an 75%-confidence interval. What value of z should they use? Choose the…

A: Level of significance ɑ=0.25

Q: Construct a confidence interval of the population proportion at the given level of confidence. X =…

A:

Q: B. Find the confidence intervals for the population mean from the given information. 3. X = 28, 4. X…

A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any…

Q: a. Find the best point estimate of the mean. b. Find the 95% confidence interval of the mean score…

A: According to the answering guidelines, we can answer only three subparts of a question and the rest…

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: d with finding a 95% confidence interval for a population mean. You do not know the standard…

A: Confidence interval: It is defined as the range which contains the value of true population…

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

A: Given information Sample size (n) = 49 Sample mean x̅ = 55.1 Standard deviation (s) = 4.8…

Q: customers. They find the average time for there oil change is 4521 miles and a standard deviation of…

A:

Q: Tina catches a 14-pound bass.  She does not know the population mean or standard deviation.  So she…

A: From the provided information, The data values are as follow: 9, 12, 13, 10 and 10 Sample size (n) =…

Q: If [0.64, 0.82] is a confidence interval for the population proporlion. Find the value of the point…

A:

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

A:

Q: Construct the confidence interval for the population mean. If the sample size is 35, the sample mean…

A: From the provided information, Sample size (n) = 35 Sample mean (x̄) = 4.8 Sample standard deviation…

Q: Find z given a 94% confidence interval and a= 0.06. z = ?

A: Confidence level=94%

Q: We would like to create a confidence interval for the mean. Which of the following would produce the…

A: Margin of error = Width/2

Q: Suppose that a random sample from a population is to be used to estimate the population mean and…

A: The confidence interval is given as Using Excel,