If n=31, ¯xx¯(x-bar)=38, and s=16, construct a confidence interval at a 98% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place.  _______ < μ <  _______

Q: You measure 39 turtles' weights, and find they have a mean weight of 34 ounces. Assume the…

A: we have to find given ci.

Q: If n=19, x(x-bar)=32, and s=3, construct a confidence interval at a 90% confidence level. Assume the…

A: Mean = 32 Standard deviation = 3 Sample size = 19

Q: A patient screens positive for Disease Y. The screener has a sensitivity of 60%. The best next step…

A: Solution:-   Given that A patient screens positive for Disease Y. The screener has a sensitivity of…

Q: If x̄=106​, σ=20​, and n=35​, construct a 99​% confidence interval estimate of the population​ mean,…

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Q: % confidence level. Assume the data came from a normally distributed population. Give your answers…

A: Sample Mean, x̄ = 35.0 sample standard deviation, s = 10.0 Sample Size, n = 24 confidence level, c=…

Q: If X=127​, σ=26​, and n=38​, construct a 95​% confidence interval estimate of the population​ mean,…

A: The random variable X follows normal distribution. The sample mean is 127. The population standard…

Q: You will be applying what you have learned in this course by gathering data and running a…

A: C) Here X¯=66.78 and σ=4.5 C.I. = X¯±z×12σn C.I. = 66.78 ± 1.96 ×4.59 C.I. = 66.78 ± 2.94  C.I. =…

Q: If n=61n=61, ¯xx¯=36, and s=4s=4, construct a confidence interval at a 99% confidence level. Give…

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Q: Wall thickness of 25 glass 2-liter bottles was measured by a quality-control engineer. The sample…

A:

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: f n is 500, x is 200, and E= 0.05, what is the upper limit of the confidence interval for the…

A: Given,n=500x=200sample proportion(p^)=xnsample proportion(p^)=200500sample proportion(p^)=0.4Margin…

Q: If n = 22, ¯xx¯ = 30, and s = 9, construct a confidence interval at a 98% confidence level. Assume…

A: According to the provided information, n  = 22,  ¯x = 30 s = 9 degrees of freedom = n-1 = 22-1 = 21…

Q: If the variance of the water temperature in a lake is 29°, how many days should the researcher…

A: Solution: From the given information, confidence level is 0.95, σ2=29 and E=4.

Q: In a survey, 20 people were asked how much they spent on their child's last birthday gift. The…

A: Givensample size(n)=20mean(x¯)=46standard deviation(s)=10α=1-0.99=0.01α2=0.005Degrees of…

Q: Express the confidence interval (19.6%,28.2%)in the form of ˆp±ME.

A: The given confidence interval is (19.6%,28.2%).

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

A:

Q: You measure 32 dogs' weights, and find they have a mean weight of 78 ounces. Assume the population…

A: Given,sample size(n)=32sample mean(x)=78standard deviation (σ)=3.4α=1-0.99=0.01α2=0.005Z0.005 =2.58

Q: Which of the two variables, the time spent by male children or the time spent by female children,…

A: We know that, the Standard Deviation is one of the type of measure of dispersion. So, we can compare…

Q: If n=12, ¯xx¯(x-bar)=35, and s=8, construct a confidence interval at a 90% confidence level. Assume…

A: Given problem Given that   n = 12 x-bar = 35 s = 8 Construct a confidence interval at a 90%…

Q: You intend to estimate a population mean with a confidence interval. You believe the population to…

A: From the provided information, Sample size (n) = 15 Confidence level = 85% Level of significance (α)…

Q: If n=22, ¯xx¯(x-bar)=38, and s=13, construct a confidence interval at a 80% confidence level. Assume…

A: The data provided is- x-bar = sample mean = m = 38 s = standard deviation = 13 n = sample mean = 22…

Q: confidence interval at a 95% confidence level. Assume the data came from a normally distributed…

A: Given that  n = 20 , s = 6

Q: Find the critical value zα/2that corresponds to the given confidence level.   86​%…

A:

Q: Assume that population means are to be estimated from the samples described. Use the sample results…

A: Given that, Mean = 77 Standard deviation = 8 Sample size = 144 95% confidence level

Q: The t-statistic is computed as follows:   The p-value for t = 2.062 and 16 df is 0.0279 (from the…

A: Given information- Value of t-statistics = 2.062 Degree of freedom, df = 16 We have to find the…

Q: If n=29, x¯(x-bar)=35, and s=12, construct a confidence interval at a 95% confidence level. Assume…

A: n = 29x¯ = 35s = 12

Q: If n = 19, ¯xx¯ = 34, and s = 20, construct a confidence interval at a 95% confidence level. Assume…

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Q: If n=28, ¯xx¯(x-bar)=48, and s=13, construct a confidence interval at a 99% confidence level. Assume…

A:

Q: You are performing a left-tailed matched-pairs test with 35 pairs of data. If a = .01, find the…

A: n = 35 Degree of freedom = 34 alpha = 0.01 Tail = One-tail

Q: A population of scores has a mean of µ=70, a median of 65 and a mode of 60. What is the most likely…

A: From the provided information, Mean (µ) = 70 Median = 65 Mode = 60

Q: If a school district takes a random sample of 61 Math SAT scores and finds that the average is 425,…

A:

Q: X=118​, σ=24​, and n=35​, construct a 95​% confidence interval estimate of the population​ mean,

A: Given that x=118σ=24n=35α=0.05

Q: X y 12 15 9 19 13 11 6 16 22 3 What is the upper bound of the 90% confidence interval for ?

A: Sure! Here is the step by step explanation of how to find the upper bound of the 90% confidence…

Q: x=200,μ=225,σ=10 x=1,μ=−1,σ=2 x=0,μ=−400,σ=200 x=12,μ=21,σ=3 The x value of ? lies the greatest…

A: Given information are,Let, (a) x=200, μ=225, σ=10(b) x=1, μ=−1, σ=2(c) x=0, μ=−400, σ=200(d) x=12,…

Q: If n = 15, ¯xx¯ = 42, and s = 18, construct a confidence interval at a 80% confidence level. Assume…

A: The sample size is, The sample mean is, The sample standard deviation is, The level of confidence…

Q: xpress the confidence interval (65.2%,83.2%) in the form of ˆp ± ME. _____% ± _____ %

A: The confidence interval is (65.2%, 83.2%).

Q: A sample of 3000 observations has a mean of 80 and a standard deviation of 10. The distribution is…

A: Given Data: x¯=80s=10   The empirical rule is also known as 68-95-99.7 rule According to the…

Q: The population of weights of Calculus textbooks is normally distributed with a population mean…

A: We have given that  X~N( mu ,sigma^2)  mu= 2.46 , sigma =0.53  Z-socre = ( x - mu) / sigma

Q: Suppose the relationship between Y and X is given by: Y = 4 + 3.2*X + error  By how much does the…

A: The objective of the question is to find out the change in the expected value of Y when X increases…

Q: Confidence interval of the population mean is given by: X+2 x where X is the mean, s is the standard…

A: As per the given statement in the question, the confidence interval for the population mean is given…

Q: If n = 20, ¯xx¯ = 47, and s = 10, construct a confidence interval at a 80% confidence level. Assume…

A: