Suppose that the time required to complete a 1040R tax form is normally distributed with a mean of 90 minutes and a standard deviation of 10minutes. What proportion of 1040R tax forms will be completed in less than 86  minutes? Round your answer to at least four decimal places

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…

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Q: Suppose a population is known to be normally distributed with a mean, equal to 116 and a standard…

A: Given dataMean = 116Standard deviation = 14Probability that population would be between 88 and 102…

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

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Q: Suppose that wedding costs in the Caribbean are normally distributed with a mean of $8000 and a…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: assume that IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If…

A: Here we need to find x such that P (X>x)=0.01, where X~N(100,15).

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

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

A: Given Data Population Mean,μ = 110 Population Standard Deviation,σ = 20

Q: The average hours of sleep on a weeknight was 6.9 hours with a standard deviation of 1.5 hours. What…

A: Given Let X : The average hours of sleep on a weeknight mean = μ= 6.9  standard deviation = σ= 1.5…

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…

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A: Given: μ=5 and σ=0.5.   The z-score is calculated asz=x-μσ

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

A: Given,mean(μ)=100standard deviation(σ)=15

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

A: Obtain the standard z-score for the random variable X equals 124. The standard z-score for the…

Q: a population was normally distributed with a mean of 10 and standard deviation of 2. What…

A: Given data,Mean μ=10sd    σ=2P(X<12.5)=?

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

A: Given Data Population Mean,μ = 100.0 Population Standard Deviation,σ = 15.0

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

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A: Given,mean(μ)=79standard deviation(σ)=10

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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 the scores of students on a Statistics course are Normally distributed with a mean of 440…

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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: The pdf of normal distribution of a random variable X with mean μ and standard deviation σ is given…

Q: Suppose that the time required to complete a 1040R tax form is normal distributed with a mean of 100…

A:

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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Q: A researcher polled a sample of  1087  adults in the year  2010 , asking them how many hours per…

A: Given that  Sample sizes n1=1087      , n2=1046      Sample means X̄1=10.49      , X̄2=9.45    ?1…

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Q: Suppose that pulse rates among healthy adults are normally distributed with a mean of 79…

A: Based on the provided information, Mean=79 beats/minute Standard deviation=10 beats/minute

Q: If the true mean is 9090 with a standard deviation of 0.0030 within what interval will 95% of the…

A: For standard normal random variable, Mean (µ) =9090 Standard deviation (σ) = 0.0030

Q: The average hours of sleep on a weeknight was 6.9 hours with a standard deviation of 1.5 hours. What…

A: Let, X= The number of hours of sleep on a weeknight. μ=6.9, standard deviation=σ=1.5 We want to…

Q: Suppose that pulse rates among healthy adults are normally distributed with a mean of  81…

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Q: Suppose that the annual household income in a small Midwestern community is normally distributed…

A: Solution: Let X be the annual household income in a small Midwestern community is normally…

Q: uppose that the scores on a reading ability test are normally distributed with a mean of  70  and a…

A: Given, Suppose that the scores on a reading ability test are normally distributed with a mean of  70…

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

A: Given : μ=100σ=15X~N(μ=100,σ2=(15)2)We want to find,P(X>128)=?

Q: 2.5% Of scores on a normally distributed college entrance test or below 60% and 2.5% of the scores…

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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) = 10 minutes Let X be a…

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

A: We have to find given proportion...

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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: What proportion of 2-year-old children watch more than90 minutes of television each day? What…

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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…

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.