Suppose that the time required to complete a 1040R tax form is normally distributed with a mean of 110 minutes and a standard deviation of 15 minutes. What proportion of 1040R tax forms will be completed in less than 85 minutes? Round your answer to at least four decimal places.

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Q: Suppose that the time required to complete a 1040R tax form is normally distributed with a mean of…

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Q: Suppose that the time required to complete a 1040R tax form is normally distributed with a mean of…

A: Solution-: Let, X= The time required to complete a 1040R tax form Given: We find, P[104R tax form…

Q: Suppose the mean percentage in Algebra 2B is 70% and the standard deviation is 8%. What percentage…

A: GivenMean(μ)=70%standard deviation(σ)=8%

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A: Given , x = 218    , σ = 40 We know , z-score = x-xσ

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Q: Suppose that the time required to complete a 1040R tax form is normal distributed with a mean of 90…

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Q: Suppose you have a test with a mean of 66 and a standard deviation of 5. If you first increase…

A: Given Mean =66 Standard deviation=5

Q: When my son was 7, he would get dressed without being asked 30% of the time.  Over a 10 day period,…

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Q: Suppose that the time required to complete a 1040R tax form is normally distributed with a mean of…

A: Z=x - μσ~ N(0,1)

Q: The graph illustrates the distribution of test scores taken by College Algebra students. The maximum…

A: QUESTION 1 SOLUTION: (less than 54) Step 1: Convert to z-score Formula:z=σx−μ​where;x = raw scoreμ =…

Q: Suppose that the time required to complete a 1040R tax form is normally distributed with a mean of…

A: From the provided information, Mean (µ) = 100 minutes Standard deviation (σ) = 20 minutes Let X be a…

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Q: Suppose that the time required to complete a 1040R tax form is normally distributed with a mean of…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: The graph illustrates the distribution of test scores taken by College Algebra students. The maximum…

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Q: Suppose the mean percentage in Algebra 2B is 70% and the standard deviation is 8%. What percentage…

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Q: In one sentence, please write what you understand by the term standard deviation.

A: Standard deviation is a measure of dispersion or spread of the data set relative to its mean.

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Q: Suppose that the time required to complete a 1040R tax form is normal distributed with a mean of 110…

A: The sample mean =110The population mean =119The standard deviation =20

Q: Suppose that the time required to complete a 1040R tax form is normal distributed with a mean of 90…

A: Given Mean=90 Standard deviations=10

Q: ) 5.2°F per month

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Q: Round each z-score to the nearest hundredth. A data set has a mean of  x = 4079  and a standard…

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Q: To qualify for a police academy, applicants are given a test of physical fitness. The scores are…

A: Given : mean (μ ) = 62 standard deviation (σ) = 7                                  σ²  = 49

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Q: Suppose that the time required to complete a 1040R tax form is normal distributed with a mean of 90…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 90 and…

Q: Suppose that the time required to complete a 1040R tax form is normally distributed with a mean of…

A: Given data, Mean(μ)=90sd(σ)=15P(X<91)=?

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A: Given that  Mean = M = 65  Standard deviation = SD = 9 X ~ Normal (M = 65 , SD = 9)

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A: Let us take an example.   Let X be random variable    we know that Meanx¯=∑xn Therefore, ∑x=nx¯

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Q: 9. mean = 676; standard deviation = 60 Page

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Q: The mean marks of 100 students were found to be 40. Later on it was discovered that a score of 53…

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Q: Assume monthly returns of 1%, -2%, 3% and 1%. What is periodic arithmetic mean, geometric mean,…

A: Given Information: Consider the given dataset: 1%, -2%, 3% and 1%

Q: a population has mean score of 50 if five points are added to each score what is the new mean

A: GivenThe population mean = 50Mean is the average of all the data points in the data distribution. It…

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.