Find the indicated probability. The incomes of trainees at a local mill are normally distributed with a mean of $1100 and a standard deviation of $150. What percentage of trainees earn less than $900 a month? 35.3% O 40.8% 9.1% 90.8% O O

Q: The average GPA at the University of North Carolina is 3.2, with a standard deviation of 0.3. Assume…

A: Given that.   X~N( μ , ?^2 )   μ=3.2     , ?=0.3   Z-score =( x - μ )/?

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Q: d) What is the probability that the number of drivers will be 10 or more? e) Find the mean and the…

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Q: c.    What is the mean of the sample means? d.    What is the standard deviation of the sample means…

A: Let  Mu = population mean  X bar = sample mean n = sample size  Sigma = population standard…

Q: The variance of a data set is 10. What is the standard deviation of the data set? O 10 O 3.16 O 100…

A: We can find the standard deviation as below

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A:

Q: The weight of football players is normally distributed with a mean of 200 pounds and a standard…

A: According to the provided information, Mean (μ) = 200 Standard Deviation (σ) = 25

Q: A normal distribution has a mean of 100 and a standard deviation of 10. What percent of data values…

A: The formula for z score is,  The probabilities is computed by using the standard normal table.

Q: Hour Frequencies 10-14 8 15-19 28 20-24 27 25-29 12 30-34 4 35-39 1

A:

Q: Rochester, NY averages m=21.9 inches of snow for the month of December. The distribution of snowfall…

A: Let X represents the amount of snowfall, then we are given the information that  X follows normal…

Q: For a normal distribution with a mean of µ = 80 and a standard deviation of σ = 10, what is p(X<95)?…

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Q: A banks loan officer rates application for credit. The ratings are normally distributed with a mean…

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Q: The mean and standard deviation of a population are 200 and 20, respectively. What is the…

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Q: An electrical firm manufactures light bulbs for LCD projectors. A randomly selected sample of 24…

A: Given that  Ransom sample size (n) = 24 Mean life span (x¯) = 600 hours Standard deviation (s) = 50…

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Q: Find the mean and the standard deviation of this normal distribution 20% 20 36

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Q: A sample was done, collecting the data below. Calculate the standard deviation, to one decimal…

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A: Given, Probability distribution table is

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Q: Weekly Ford sales follow a normal distribution, with amean of 50,000 cars and a standard deviation…

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Q: ed for évents held at City- Community theatre are believed to be normally distributed with a mean of…

A: Given data, μ=12,000σ=1000

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Q: What symbol is used for the standard deviation of a population? O a. X-bar O b.H O C. S O d. o

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Q: e) Find the mean, expected value, variance, and standard deviation of the above scenario.

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A: Solution

Q: Builtrite Furniture has calculated the average weekly payroll to be $15,000 with a standard…

A: Mean = 15000 Standard deviation = 3000 P-value = 0.04

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Q: The annual income of residence in certain county is normally distributed with a mean of $42,000 and…

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Q: Which data set would you expect to have the highest standard deviation? Why? Heights (lengths) of…

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Q: Find the mean, variance, and standard deviation with the given picture below.

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A: Given,mean(μ)=80standard deviation(σ)=25

Q: Using the definitional formula, compute SS, variance and the standard deviation for the following…

A: Let "X" be the scores the number of samples (n) =? 1 -2 4 8 5 25 0 -3 9 4 1 1 2 -1…