Calculus and Above

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Construct a 99​% confidence interval to estimate the
Construct a 99​% confidence interval to estimate the population mean using the accompanying data. What assumptions need to be made to construct this​ interval? x=67 σ=11 n=11 What assumptions need to … read more
Kofi
PhD in Statistics
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Construct a 99​% confidence interval to estimate the
Construct a 99​% confidence interval to estimate the population mean using the data below. x=16 s=5.9 n=24 What assumptions need to be made about this​ population? The 99​% confidence interval for the… read more
Kofi
PhD in Statistics
Ph.D.
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A national air traffic control system handled an average of
A national air traffic control system handled an average of 47,226 flights during 29 randomly selected days in a recent year. The standard deviation for this sample is 6,216 flights per day. Complete … read more
Kofi
PhD in Statistics
Ph.D.
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A random sample of 90 observations produced a mean of
A random sample of 90 observations produced a mean of x¯¯¯=27.7 from a population with a normal distribution and a standard deviation σ=4.98.(a) Find a 90% confidence interval for μ _____≤μ≤ _____ (b)… read more
akch2002
Master's Degree
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1 point) A random sample of 80 observations produced a mean
1 point) A random sample of 80 observations produced a mean of x⎯⎯⎯=33.7 from a population with a normal distribution and a standard deviation σ=3.75.(a) Find a 90% confidence interval for μ≤μ≤(b) Fin… read more
Sandhya_sharma
Master's Degree
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Sleep – College Students: Suppose you perform a study about
Sleep – College Students: Suppose you perform a study about the hours of sleep that college students get. You know that for all people, the average is about 7 hours. You randomly select 35 college stu… read more
Sandhya_sharma
Master's Degree
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A simple random sample of size n is drawn. The sample​ mean,
A simple random sample of size n is drawn. The sample​ mean, x overbar​, is found to be 18.2​, and the sample standard​ deviation, s, is found to be 4.9.​(a) Construct a 95​% confidence interval about… read more
R.R. Jha
Bachelor's Degree
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Salmon Weights: Assume that the weights of spawning Chinook
Salmon Weights: Assume that the weights of spawning Chinook salmon in the Columbia river are normally distributed. You randomly catch and weigh 18 such salmon. The mean weight from your sample is 22.2… read more
Sandhya_sharma
Master's Degree
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Sleep – College Students: Suppose you perform a study about
Sleep – College Students: Suppose you perform a study about the hours of sleep that college students get. You know that for all people, the average is about 7 hours. You randomly select 35 college stu… read more
Sandhya_sharma
Master's Degree
18,755 satisfied customers
Sleep – College Students: Suppose you perform a study about
Sleep – College Students: Suppose you perform a study about the hours of sleep that college students get. You know that for all people, the average is about 7 hours. You randomly select 35 college stu… read more
Sandhya_sharma
Master's Degree
18,755 satisfied customers
Student Debt – Vermont: The average student loan debt of a
Student Debt – Vermont: The average student loan debt of a U.S. college student at the end of 4 years of college is estimated to be about \$22,300. You take a random sample of 131 college students in t… read more
Sandhya_sharma
Master's Degree
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Salmon Weights: Assume that the weights of spawning Chinook
Salmon Weights: Assume that the weights of spawning Chinook salmon in the Columbia river are normally distributed. You randomly catch and weigh 17 such salmon. The mean weight from your sample is 22.2… read more
Sandhya_sharma
Master's Degree
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Could you also answer this question for me? Thank you again
Could you also answer this question for me? Thank you again for your help earlier! -----------------------------------------------------------------------------------------------Method 1: Use the Stud… read more
Keith Pelletier
Master's Degree
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A research company desires to know the mean consumption of
A research company desires to know the mean consumption of milk per week among males over age 45. A sample of 1842 males over age 45 was drawn and the mean milk consumption was 4.9 liters. Assume that… read more
Sandhya_sharma
Master's Degree
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1. For estimating a population mean with the sample mean
1. For estimating a population mean with the sample mean find (i) the standard error of and (ii) the 100 (1-0x) error margin. Round answers to three decimal places. S.E. 98% error margin is 2. For est… read more
Ryan
Bachelor's Degree
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A simple random sample of size n= 11 is drawn from a population
A simple random sample of size n= 11 is drawn from a population that is normally distributed. The sample mean, x, is found to be 109, and the sample standard devation, s, is found to be 10. Construct … read more
Math-John
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a) From the information given here, determine the 95% confidence
a) From the information given here, determine the 95% confidence interval estimate of the population mean. Xbar = 100 σ = 20 n = 25 b) Repeat part (a) with xbar = 200. c) Repeat part (a) with xbar = 5… read more
Chirag
Master's Degree
10,329 satisfied customers
1. a) From the information given here, determine the 95% confidence
1. a) From the information given here, determine the 95% confidence interval estimate of the population mean. Xbar = 100 σ = 20 n = 25 2. b) Repeat part (a) with xbar = 200. c) Repeat part (a) with xb… read more
Chirag
Master's Degree
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