If n = 16, ¯xx¯ = 45, and s = 11, construct a confidence interval at a 99% confidence level. Assume the data came from a normally distributed population. Give your answers to three decimal places.            < μμ <

Q: Find the value of the sample size needed if the confidence interval is 95% that the sample…

A: Given that  Margin of error =E =0.04 Sample proportion p^=0.45

Q: The distribution of scores on a standardized test is approximately Normal with a standard deviation…

A: According to the provided information, Mean (x̅) = 76.8 Standard deviation (σ) = 22 Sample size (n)…

Q: Determine the 80% confidence interval estimate for the population mean of a normal distribution…

A: given data n = 144x¯ = 1500σ = 11180% ci for μ = ?

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: Round to three decimal places. For a confidence level of 90%, find the critical z value

A: Given that ;  Confidence level is 90% To find the critical value = ????

Q: n=11, ¯x¯(x-bar)=45, and s=8, construct a confidence interval at a 80% confidence level. Assume the…

A: A confidence interval is an interval (corresponding to the kind of interval estimators) that has the…

Q: If n = 22, ¯xx¯ = 36, and s = 14, construct a confidence interval at a 98% confidence level. Assume…

A: From the provided information, Sample size (n) = 22 Sample mean (x̄) = 36 Standard deviation (s) =…

Q: If n=26, (x-bar)=41, and s=14, construct a confidence interval at a 80% confidence level. Assume the…

A:

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: Solve the problem. The following confidence interval is obtained for a population proportion, p:…

A: Given data: The following confidence interval is obtained for a population proportion,          p:…

Q: n=550 x=440 90% confidence

A: Given that,  n=550 x=440  The sample proportion is, Critical values: By using the standard normal…

Q: Find the critical  t-value that corresponds to  99% confidence and   n=10.

A: t distribution: Let us assume X is a random variable following standard normal distribution and Y is…

Q: If n=25, (x-bar)=36, and s=19, construct a confidence interval at a 99% confidence level. Assume the…

A: From the provided information,Confidence level = 99%

Q: Using the form p ̂ ±ME, express the confidence interval (0.870, 0.894).

A: The given confidence interval is,  (0.870, 0.894). The value of sample proportion is,

Q: A confidence interval for μ1 − μ2 can be constructed, write down the expression.

A: Confidence interval: Confidence interval is the interval estimate of the population parameter. It is…

Q: If n = 25, ¯x = 50, and s = 19, construct a confidence interval at a 99% confidence level. Assume…

A:

Q: you want to obtain a sample to estimate a population mean. based on previous evidence, you believe…

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: (T/F) To choose a sample size before estimating a proportion, we need to know the desired confidence…

A: The objective of the question is to determine whether the desired confidence level is necessary when…

Q: The mean diastolic blood pressure for a random sample of 70 people was 96millimeters of mercury. If…

A: Given Data: x¯=96n=70σ=12   z-value corresponding to 99% Confidence level=2.576

Q: The confidence interval for a population mean is (7.36, 7.52). What the the sample mean and the…

A: Solution: Given information: The confidence interval for a population mean μ is ( 7.36, 7.52) Upper…

Q: The mean diastolic blood pressure for a random sample of  60  people was  97  millimeters of…

A: Given: n=60x=97σ=12Confidence Level =90%

Q: find out the confidence interval for population proportion  for given data  [ 4 decimal places ]…

A:

Q: Find the critical value zc that corresponds to a confidence interval with 0.07 .  Round to the…

A: A critical value defines the rejection region where the test-statistic value lies indicates the…

Q: f n=18, x = 33, and s = 8, find the margin of error at a 80% confidence level Give your answer to…

A: Given data n = 18 x =33, s= 8 Confidence level c = 0.8 α = 1- 0.8 = 0.2

Q: For his senior project jerry wants to know the average gpa of students at his high school. He…

A: Here sample size is n= 21 And mean, X bar = 3.07  Standard deviation, s= 0.78 Confidence interval…

Q: If n-26, (x-bar)-32, and s-4, construct a co came from a normally distributed population. Give your…

A: Given,  sample mean  (x̄)  = 32 sample size(n)  = 26 sample standard deviation (s) = 4

Q: Find the critical value, tc, for confidence level = 0.95 and n =12. Round to 3 decimal

A: The confidence level = 0.95 and n =12 Degree of freedom =df =n-1

Q: Find a 90% confidence interval for the population mean age of the Smurfs if a sample of 52 smurfs…

A: It is given that, There is a random sample of size 52 and has a mean of 49.7 and the standard…

Q: The mean diastolic blood pressure for a random sample of 70 people was 96  millimeters of mercury.…

A: To Compute confidence interval are as follows     The data must be taken randomly     The sample…

Q: A confidence interval for the difference in the number of friends that men and women have was found…

A: The formula of the midpoint of the confidence interval formula is,

Q: If n=21, (x-bar)=46, and s=3, construct a confidence interval at a 90% confidence level. Assume the…

A: given data sample size (n) = 21sample mean ( x¯ ) = 46sample standard deviatio (s) = 390% ci for…

Q: The mean diastolic blood pressure for a random sample of 90 people was 82 millimeters of mercury. If…

A: Given that  Random sample size (n) = 90 Mean diastolic blood pressure (x¯)= 82 mmHg  Population…

Q: A random sample of gasoline prices in 30 gas stations gives the following statistics: y =$1.29, s…

A: Given  n=30, s=0.16, ȳ=1.29  Find 95% CI for population mean μ

Q: It took an average of 4.4 years for a grove of 57 orange trees to bear fruit. Assume the standard…

A: Solution-: Given: x¯=4.4,n=57,σ=3.7,α=0.04 We find 96% C.I. =?

Q: Determine construct the sample size is 5 and the level confidence is 99.9%. the value of t necessary…

A: Answer :- Determine the value  of  t necessary to  construct a confidence interval when…

Q: Determine the point estimate of the population mean and margin of error for the confidence interval.…

A: Lower bound=15, Upper bound=27

Q: Determine the point estimate of the population mean and margin of error for the confidence interval.…

A:

Q: f n=19, sample mean=50, and s =8, construct a confidence interval at a 99% confidence level. Assume…

A:

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

A:

Q: The mean diastolic blood pressure for a random sample of 50 people was 86 millimeters of mercury. If…

A: Given that  Random sample size (n) = 50 Mean diastolic blood pressure (x¯) = 86 mmHg Standard…

Q: Give a 95% confidence interval for the true mean time students spent practicing for the play.…

A: Given,   Sample size = 120 Sample mean = 45.6 Sample standard deviation = 13.3   Since the…

Q: Describe about the Confidence Interval for μD.

A: Correlated samples t test or paired t test or repeated measures t test: The paired t is used when…