XARA Construct a 99% confidence interval to estimate the population mean using the following data.what assumptions need to be made to construct the interval? 7810=16 n = 20 What assumptions need to be made to construct the interval

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

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Q: When the standard deviation used to construct a confidence interval for a population mean increases,…

A: Given data: When the standard deviation used to construct a confidence interval for a population…

Q: What is the purpose of the confidence intervals in Statistics?

A: Confidence interval is derived from the Sample stastics for the estimatation of population…

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

A: sample size(n)=515sample proportion=0.20Confidence level=95%

Q: Use the table to get the answers  For the variable AGE                    i.      What is the…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: y selected textbooks' weights, and find they have a mean weight of 78 ounces. Assume the population…

A: As the population standard deviation is known, we will use z distribution. The value of z at 95%…

Q: You want to estimate the mean time college students spend watching online videos each day.  The…

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Q: Construct the confidence interval for the population mean y. C=0.95, x= 16.7, o= 4.0, and n= 75. A…

A: Here, C=0.95, x=16.7, σ=4.0, and n=75.

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

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Q: a 95% confidence interval estimate for population mean is determined to be 75.38 to 86.52. if the…

A: We have  to find the confidence level is reduced to 90%, the confidence interval will....

Q: You measure 28 dogs' weights, and find they have a mean weight of 71 ounces. Assume the population…

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Q: The mean weight of 25 women is 135 lbs with a standard deviation of 15 lbs. a. What is the standard…

A: The sampled no. of women, i.e., the sample size, n=25.The sample mean weight (in lbs), x¯=135.The…

Q: When calculating the confidence interval for a population mean, which distribution is used?

A: Confidence interval for mean: When the sample size is large (n>30) and population variance (or…

Q: Define the confidence level?

A: It is the likelihood of containing the true population parameter under the confidence interval when…

Q: Confidence level-99%, degrees of freedom=19 JE

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

A: Given               Lower Bound = 21               Upper Bound = 25 The point estimate of the…

Q: Assuming that the population is normally distributed, construct a 95% confidence interval estimate…

A: The question is about confidence intervalGiven :To find :1 ) 95 % CI estimate for the popl. mean…

Q: In statistics, what is a Confidence Interval and how confidence intervals are used in research

A: We have define the confidence interval . Also we have find the its use in the research

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: What is the confidence interval estimate for the population mean? If the sample mean is 13 and error…

A: Given information: The sample mean is, M = 13 The error bound for the mean is, E = 3.2 It is…

Q: You measure 35 textbooks' weights, and find they have a mean weight of 36 ounces. Assume the…

A: Given information- Population standard deviation, σ = 9.3 ounces Sample size, n = 35 Sample mean,…

Q: Determine if you should use a confidence interval for the mean or a confidence interval for…

A: The aim is to determine whether to use confidence interval for mean or a confidence interval for the…

Q: Refer to the data below: To estimate the mean height of female high school juniors, you take a…

A: Solution: Given data Sample size(n) = 30 To find : Point Estimate  of mean (μ) =??

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 confidence interval was constructed to approximate a population proportion. The interval was from…

A: We have given that,  Let p̂ represents the sample proportion and E represents the margin of error,…

Q: 95% confidence, the margin of errors is 2.5 then, the confidence interval for population mean is

A: The sample mean is given as 5.0 with a 95% confidence. The margin of error is 2.5. To determine the…

Q: Use the given data to construct a confidence interval of the requested level. X = 178, N=531,…

A: Given : Sample Size, n = N = 531 Number of successes, x = 178

Q: You measure 37 textbooks' weights, and find they have a mean weight of 59 ounces. Assume the…

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Q: Find a 95% confidence interval for the difference between full attendance students' Exam 5 score and…

A: We have given data,  Less attendance Full attendance 90 96 90 96 60 100 50 99 69   88…

Q: A confidence interval was constructed to approximate a population proportion. the interval was from…

A: From the provided information, The confidence interval was from 30.5% to 41.5%.

Q: You measure 29 backpacks' weights, and find they have a mean weight of 46 ounces. Assume the…

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Q: You measure 50 textbooks' weights, and find they have a mean weight of 66 ounces. Assume the…

A: From the provided information, Sample size (n) = 50 Sample mean (x̅) = 66 ounces Population standard…

Q: Please do Part D, E, F, G. The answers for part A,B,C are given to help. QUESTION: A national poll…

A: (d)   Determine whether the 94% confidence interval provides good evidence that the actual…

Q: If n = 15, the sample mean = 150, SD = 10, what is the confidence interval (using 99% confidence…

A: Given data,n=15x=150σ=10z-value at 99% confidence is Zc=2.576

Q: Student 1 Student 2 Student 3 Student 4 Student 5 Student 6 Student 7 Student 8 Student 9 Height…

A: Given α=0.05nH=9nW=9 Define: X¯H=mean height of the sample of students X¯W=mean weight of the…

Q: If n = 380 and X = 304, construct a 95% confidence interval for the population proportion, p. Give…

A: Given: n = 380 x = 304

Q: Use the table to get the answer         b.       For the variable EDUC                      i.…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: If Xbar=93​, σ=13​, and n=62​, construct a 99​% confidence interval estimate of the population​…

A: Given that  Sample size: n=62 Sample mean: x¯=93 Population standard deviation: σ=13 Confidence…

Q: If X=72​, σ=13​, and n=66​, construct a 95​% confidence interval estimate of the population​…

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Q: Which type of confidence interval should you use in this situation? An economics professor randomly…

A: n=sample size=100, X¯=54.8,s=7.9