Assume that a sample is used to estimate a population mean μμ. Find the margin of error M.E. that corresponds to a sample of size 14 with a mean of 65.4 and a standard deviation of 6.5 at a confidence level of 80%. Report ME accurate to one decimal place because the sample statistics are presented with this accuracy. M.E.    Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.

Q: The population mean is $ 1.587. (Round to three decimal places as needed.) Tax Rate Frequency…

A: We have given that the table Class Frequency 0.00 - 0.49 5 0.50 - 0.99 12 1.00 - 1.49 7…

Q: A random sample of 100 observations from the first population was found to have a sample mean of 85…

A: The following information has been provide.  Sample mean1 = 85 Sample mean 2 = 93 Sample size 1 =…

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Q: The scores on the Accuplacer test and High School GPAs are normally distributed. The Accuplacer test…

A: It is given that: For the Accuplacer test, Meanμ1=40 Standard deviationσ1=9 For the GPAs,…

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A: Given : μ=25σ=7X~N(μ=75,σ2=(7)2) We want to find, proportion of students studied less than 30 hours.

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A: given data normal distribution μ=175.3σ=7P(x>171)=?

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Q: The masses of packets of tea can be used to follow a normal distribution with mean 250 grams and…

A: The provided information is  µ=250 σ=5 P(X>y)=0.788…

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A: Frequency distribution of cigarettes tax rate. We have to find out population mean and population…

Q: The frequency distribution was obtained using a class width of 0.5 for data on cigarette tax rates.…

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Q: For what lengths will a bolt be​ destroyed?

A: here given, mean = 7cm standard deviation = 0.10 cm

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A: Test for Standard deviation: The χ2 Chi-Square test is used to test the significance difference…

Q: Find the minimum number sample size neeeded to be ninety seven percent confident that the true mean…

A: Given informationstandard deviation (σ)=7.3 ouncesMargin of Error=2.3α=0.03Zα/2=0.032=2.17   (from t…

Q: In a random sample of eleven people, the mean driving distance to work was 24.7 miles and the…

A: From the provided information, Sample size (n) = 11 Sample mean (x̅) = 24.7 miles Sample standard…

Q: The data has a mean of 27 and a standard deviation of 3.8, rounded to the nearest tenth. How many of…

A: Given that  a data has a mean μ = 27                                  standard…

Q: suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 2700 grams and…

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Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…

A: Givenaverage length of trout caught in Pyramid Lake is μ = 20 inches.Sample size = 37sample mean =…

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A: Given data,μ=866σ=159P(X<862)=?

Q: Assume that a sample is used to estimate a population mean µ. Find the margin of error M.E. th…

A: Given information: Sample size is n=5 sample mean is 78.6 Sample standard deviation is 13.6…

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Q: A sample of 8  adult elephnts had an average weight of 11.461 pounds. the standard deviation for the…

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A: The mean is 73 and the standard deviation is 11.

Q: Alan, a highway safety inspector, is concerned about the potential for accidents caused by boulders…

A: Given data μ = 565σ = 100normal distribution P(493<x<681) = ?

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A: Given,sample size(n)=22sample mean(x¯)=13.8standard deviation(σ)=2.1α=1-0.90=0.1α2=0.05Z0.05=1.645…

Q: The effect of a medication can be evaluated by how many days the patient recovered. 51 patients are…

A: Given  n=51, σ=20, s=15.7, ɑ=0.05   We want to test the hypothesis

Q: The scores on a standardized test are normally distributed with a mean of 90 and standard deviation…

A: The test score is 0.6 standard deviations above the mean is obtained below: From the given…

Q: The scores on the Accuplacer test and High School GPAs are normally distributed. The Accuplacer test…

A: The mean of the Accuplacer test, The standard deviation of the Accuplacer test, The mean of the High…

Q: The scores on the Accuplacer test and High School GPAs are normally distributed. The Accuplacer test…

A: Given information: Accuplacer μ=40, σ=8 High school μ=2.6, σ=0.20

Q: Suppose that the scores on a statewide standardized test are normally distributed with a mean of 67…

A: From the provided information, Mean (µ) = 67 Standard deviation (σ) = 6 Let X be a random variable…

Q: Suppose that we took an SRS of 1600 eighth-graders and found ã = 285. Compared with an SRS of 2500…

A: If the sample size is smaller then the margin of error is larger.

Q: Assume that adults have IQ scores that are normally distributed with a mean of 100.3 and a standard…

A: Assume that adults have IQ scores that are normally distributed with a mean of 100.3 and a standard…

Q: 95% confidence interval of the population mean

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Q: A population has a mean of 250 and a standard deviation of 24. What value from the population has a…

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Q: he average height of students at a school from an SRS of 12 students gave a standard deviation of…

A: Given: Sample size, n=12 Standard deviation, s=2.5 We need to construct a 95% confidence interval…

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Q: The mean score of Grade 11 students in a General Math examination was observed to be 75 with a…

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Q: A medical doctor who wanted to study the heights of adult men and women took a random sample of 150…

A: Given n1=150 n2=120