The lengths of pregnancies in a small rural village are normally distributed with a mean of 260 days and a standard deviation of 14 days. In what range would you expect to find the middle 95% of most pregnancies? Between             and                 If you were to draw samples of size 35 from this population, in what range would you expect to find the middle 95% of most averages for the lengths of pregnancies in the sample? Between            and

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 269 days…

A: For the population (individual pregnancies):Mean (μ) = 269 daysStandard Deviation (σ) = 12 days

Q: The quality-control manager at a light bulb factory needs to determine whether the mean life of a…

A: Given,sample size(n)=64sample mean(x¯)=350Population standard deviation(σ)=100

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A: given: mean = 50 median = 50 standard deviation = 5

Q: for this set of data, the standard deviation is equal to: 9,8,10,5,5,2,3,6,3

A: Mean:The formula for finding mean is shown below:

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A:

Q: or a distribution, the mean is 100 and the standard deviation is 4.  If a data value x has a value…

A: Given data,Mean μ=100sd σ=4If x=90z=?

Q: Find  Variance and Standard deviation for the following data.  4,  4,  7,  11,  14.

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Q: The population mean is 75 and the population standard deviation = 6. Random samples (containing 16…

A: Given , The population mean ( n )   = 75 ,  the population standard deviation ( σ )= 6

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Q: The scores at a golf course recorded last year followed a normal distribution with mean 78 and…

A:

Q: Solve this for me

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A:

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A: In this case, the minimum amount spent on books is $398 and maximum amount is $804.

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Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 117…

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Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 263 days…

A: Let X denotes the lengths of pregnancies in a small rural village which follows normal distributed…

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A: From the provided information, Sample size (n) = 60 Sample mean (x̄) = 31 pounds Standard deviation…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 267 days…

A: It is given that the length of pregnancies is normally distributed with mean 267 and standard…

Q: A population has a mean u=71 and a standard deviation a=20. Find the mean and standard deviation of…

A:

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 261 days…

A: Givenmean(μ)=261standard deviation(σ)=17sample size(n)=56

Q: a) Calculate the z-score for Roberto's test grade. b) Calculate the z-score for Derek's test grade.…

A: For art history, mean = 77 and SD = 9.6 For English, mean = 66.9 and SD = 10

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Q: he quantitative subset of the Graduate Record Exam (GRE) has a mean of 500 and a standard deviation…

A: Given data population mean (μ)= 500populatiion sd(σ) = 100sample size(n) = 64sample mean ( x¯ )=…

Q: the mean is 146, and standard deviation is 35. A score of 181 is how many z-scores above the mean?

A:

Q: A distribution of scores has no mode and the same median and mean values. This indicates that the

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A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.