Assume exponential distrobution. To verify a 500,000 hours MTTF, how many test units do we need?   • At 90% confidence level and a test duration of 2500 hours and 2 failures are allowed.   • At 80% confidence level and a test duration of 2500 hours and 2 failures are allowed.   • At 80% confidence level and a test duration of 2000 hours and 2 failures are allowed.   • At 80% confidence level and a test duration of 2000 hours and 1 failure is allowed.   Please step by step answer.

Q: Kayden takes a simple random sample of 24 professional hockey players and 16 professional baseball…

A: Given datan1=24           n2=16μ1=197.57   μ2=208.63s1=16.58     s2=18.62

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: Construct the indicated confidence interval for the difference between the two population means.…

A: We have given that,  x̅1 = 393, x̅2 = 703, s1 = 85, s2 = 98 and          n1 = n2 = 384 Then,  We…

Q: If n=28, x¯(x-bar)=49, and s=4, construct a confidence interval at a 80% confidence level. Assume…

A: Given: Sample size (n) = 28 Sample mean (x̅) = 49 Standard deviation (s) = 4 Confidence level = 80%…

Q: Refer to the accompanying data display that results from a sample of airport data speeds in Mbps.…

A: Given: 95% confidence interval = (13.046, 22.15)

Q: If n = 11, ¯xx¯ = 40, and s = 17, construct a confidence interval at a 98% confidence level. Assume…

A:

Q: If n=27, (x-bar)=39, and s=19, construct a confidence interval at a 99% confidence level. Assume the…

A: According to the given information, we have Sample size, n = 27 Sample standard deviation, s = 19…

Q: Find the critical values Zc that corresponds to an 82% confidence level.

A: The confidence level is 82%.

Q: Other than the typical 90%, 95% and 99% confidence intervals, we may want to work with any other…

A: Note: This critical value calculated from standard normal distribution table at level of…

Q: A researcher is estimating the population proportion of US adults age 18 – 24 who have had an HIV…

A: Hi! Thanks for posting the question. Since there are more than three sub-part questions, we will…

Q: If n=32, x(x-bar)=47, and s=18, construct a confidence interval at a 99% confidence level. Assume…

A: Given that  Sample size n =32 Sample mean =47 Standard deviation =18

Q: Express the confidence interval 30%±3.2%30%±3.2% in interval form

A:

Q: If n=28, ¯x�¯(x-bar)=32, and s=2, construct a confidence interval at a 80% confidence level. Assume…

A: The sample size is 28 The sample mean is 32 The sample standard deviation is 2.

Q: a) Find the equation of the regression line. Provide slope and y-intercept, explicitly. If you can’t…

A: Regression is the method used for prediction. It has two types of variables and two types of…

Q: If n=25, x(x-bar)=41, and s=9, construct a confidence interval at a 95% confidence level. Assume the…

A: From given data we have ; n=25x¯=41s=9

Q: interval at a 80% confidence level. Assume the data came from a normally distributed population.…

A: Given information: Sample size(n)=26. Sample meanx¯=43. Sample standard deviation(s)=8. Confidence…

Q: If n=22, x=40, and s=3, find the margin of error at a 90% confidence level using the critical value…

A: Given data,n=22x¯=40s=3CI=0.90ME=?

Q: If n = 32, x¯(x-bar)=  37, and s = 8, construct a confidence interval at a 90% confidence level.…

A: Given data, n=32 x bar =37 s=8 α=0.10

Q: One of the interesting developments of the Covid pandemic has been the politicization of the…

A: Hi! Thank you for the question As per the honor code, We’ll answer the first question since the…

Q: If n = 16, ¯xx¯ = 32, and s = 10, construct a confidence interval at a 80% confidence level. Assume…

A: We have given that,  Sample mean (x̄) = 32, sample size (n) = 16 and standard deviation (s) = 10…

Q: Construct a confidence interval for p, - P2 at the given level of confidence. X1 = 25, n, = 257, x2…

A:

Q: Ten randomly selected cars were filled with either regular or premium gas (the decision was made…

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Q: Confidence interval for the difference between two population means. Find what are being asked. A…

A: The following information is obtained from the provided  For the first group: The sample size, n1=16…

Q: If n=23, x=40, and s=5, find the margin of error at a 80% confidence level using the critical value…

A: Here, x=40, s=5, n=23, and CL=0.80. The value of α is, α=1-CL  =1-0.80  =0.20

Q: f n=29, ¯xx¯(x-bar)=48, and s=11, construct a confidence interval at a 99% confidence level. Assume…

A: Given data,n = 29x = 48s = 11D.f = n-1 = 29-1=28

Q: If n = 16, ¯xx¯ = 45, and s = 11, construct a confidence interval at a 99% confidence level. Assume…

A:

Q: If n = 28, ¯xx¯ = 45, and s = 20, construct a confidence interval at a 80% confidence level. Assume…

A:

Q: place. Answer: Lower endpoint: Upper endpoint: 41. Given two independent random samples with the…

A:

Q: Construct a confidence interval for p, - P2 at the given level of confidence. x, = 367, n, = 541, x2…

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Q: 11. Given two independent random samples with the following results: n1 = 243 p1 = 0.72 n2 = 405 p2…

A: Step1 step2 The standard error is given by So the standard Error = 0.038

Q: You measure 33 dogs' weights, and find they have a mean weight of 55 ounces. Assume the population…

A: It is given that Sample size n = 33 Sample mean M = 55 Population SD = 14 The critical value of Z at…

Q: In each of Exercises, we have presented a confidence interval (CI) for the difference, µ1 - µ2,…

A:

Q: If n = 14, ¯xx¯ = 44, and s = 18, construct a confidence interval at a 95% confidence level. Assume…

A: Given information- Sample size (n) = 14 Mean x̅ = 44 Standard deviation (s) = 18 Significance…

Q: If n = 20, ¯xx¯ = 47, and s = 9, construct a confidence interval at a 90% confidence level. Assume…

A: The degrees of freedom is, df=n-1=20-1=19 The degrees of freedom is 19. Computation of critical…

Q: If n=31, ¯xx¯(x-bar)=34, and s=5, construct a confidence interval at a 90% confidence level. Assume…

A: From the provided information, Sample size (n) = 31 Sample mean (x̅) = 34 Standard deviation (s) = 5…

Q: If n=30, (x-bar)=45, and s=13, construct a confidence interval at a 95% confidence level. Assume the…

A: We have given that,  Sample mean (x̄) = 45, sample size (n) = 30 and standard deviation (s) = 13…

Q: If n=14, (x-bar)=43, and s=16, construct a confidence interval at a 98% confidence level. Assum the…

A: given data sample size (n) = 14sample mean ( x¯ ) = 43sample standard deviatio (s) =1698% ci for…

Q: 10q3r1 (4) Body weight Bench press 148 145 176 148 154 133 189 156 181 166 217 174 210 168 150 139…

A: Given dataEnter the data in excel as shown below

Q: If n = 22, ¯xx¯ = 43, and s = 16, construct a confidence interval at a 80% confidence level. Assume…

A: 1) Given, n = 22, x¯ = 43, and s = 16 confidence interval =80% df=n-1=22-1=21 Critical value for 80%…

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: Take an SRS where n equals 50 and calculate at 95% confidence interval. If we took a different SRS…

A: Sample size Confidence level is 95%If we took a different SRS of the same size (50) from the same…

Q: Part A: Construct and interpret a 95% confidence interval for the difference in population…

A: Let  is the difference between population proportions of females and males who have an after-school…

Q: Construct a confidence interval for p, - p, at the given level of confidence. X1 = 381, n, = 507, x,…

A:

Q: Construct a confidence interval for p, - P2 at the given level of confidence. x1 = 26, ng = 236, x2…

A: Given: x1=26n1=236x2=30n2=304