The time spent by a teacher at work in the holidays is normally distributed with a mean of 20 hours and a standard deviation of 5 hours. What amount of time does the bottom 33% of teachers work? 15.8 hours 17.8 hours None of these 16.15 hours

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A: Given  X~N( μ =24.8 , ? = 6.2 ) μ = 24.8 , ? = 6.2 Note: According to bartleby experts question…

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Q: The tine spent by a teacher at woek in the holidays is nonually distributed with a mean of 20 hours…

A: From the above data Third option is correct 17.8

Q: Bundles of firewood are normally distributed with a mean of 20 pounds, and a standard deviation of 2…

A: According to the given information, we have Mean = 20 Standard deviation = 2 Z score = 1.50

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A: Standard deviation= √E(X2)-(E(X))2 E(X)=( summation Xi)/n E(X2) = (summation Xi2)/n Here n= 19

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Q: The amount of rain falling in Waimea Canyon State Park, Kauai is normally distributed with a mean of…

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A: Givenmean(μ)=29standard deviation(σ)=4sample size(n)=64

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A: From the given information, Sample size n =100 Sample mean, x̅=$12.65 Sample standard deviation,…

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A: Given that  The tallest living man at one time had a height of 225 cm. The shortest living man at…

Q: The time spent by a teacher at work in the holidays is normally distributed with a mean of 20 hours…

A: X: time spent by a teacher at work in the holidaysX~N(μ,σ)Mean(μ)=20 hoursstandard deviation(σ)=5…

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Q: Engineers must consider the breadths of male heads when designing helmets. The company researchers…

A: Given data: Head breadths are normally distributed with mean and standard deviation as:…

Q: Most law schools of require applicants for admission to take the Law Schools Admissions Test (LSAT)…

A: a) The z-score is  z = x-uσ z = 134-15011z = -1.4546   b) The probability is given by P(X<134) =…

Q: A physical fitness association is including the mile run in its secondary-school fitness test. The…

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Q: 1. A biologist found the wingspan of a group of monarch butterflies to be normally distributed, with…

A: Given: Mean= 52.2mm Standard deviation=2.3mm. We standard normal deviation.

Q: students who completed this core set of courses results in a mean math score of 24.6 on the college…

A: here sample mean = 24.6 sample standard deviation = 3.3 here n = 200

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Q: A physical fitness association is including the mile run in its secondary-school fitness test. The…

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Q: Vacation Days If the average number of vacation days for a selection of various countries has a mean…

A: The mean is 29.4 days and the standard deviation is 8.6.

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A: Given, Driving time normally distributed with mean 35 and standard deviation 8 minutes.

Q: The time spent by a teacher at work in the holidays is normally distributed with a mean of 20 hours…

A: Given: mean μ= 20 Standard deviation σ=5 Concept: Here we shall use z score formula, z=x-μσ

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A: Given : Country Owners : n = 21 x1 = 15s1 = 4 City Owners : n = 23 x2 = 10s2 = 3

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A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: The time spent by a teacher at work during spring holidays is normally distributed with a mean of 20…

A: Given that.   X~N( μ , ?^2 )   μ=20     , ?=5   Z-score =( x - μ )/?

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Q: Rashid is 84 inches tall. If the height of males in the United States is normally distributed with a…

A: Given :                data point = 84                 mean = 70                standard deviation…

Q: Engineers must consider the breadths of male heads when designing helmets. The company researchers…

A: It is given that the mean is 6.9 and the standard deviation is 0.9.