10:44 PM Mon May 30 Take Quiz For a Normal Random Variable X with a mean of 80 and a Standard Deviation of 7, find P(X>94)

Q: The random variable X has a uniform distribution with values between 11 and 21. What is the mean…

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Q: A succesful basketball player has a height of 6 feet 4 inches or 193 cm based on statisc from data…

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Q: suming you obtain a random sample of blood glucose level for a 32 individuals from a population and…

A: To find the probability that the mean blood glucose levels for the sample population will be above…

Q: Working in the garden pulling weeds/planting flowers burns an average of 200 calories per hour. If…

A: given data μ=200σ=9normal distribution P(200<x<225)=?

Q: The time it takes to complete a long test for online students in a statistics class is a normal…

A: We have given that.   X~N( μ , ?^2 )   μ=75   , ?=10   Z-score =( x - μ )/?

Q: Working in the garden pulling weeds/planting flowers burns an average of 200 calories per hour. If…

A: It is given that  Mean, μ = 200 Standard deviation, σ = 9 Z-Score, Z = ( X - μ )/σ

Q: A random sample of 25 observations yield a mean of 106 and a standard deviation of 12. Find the…

A: From the given information,Sample size 25, mean 106 and standard deviation 12

Q: A sample of 30 observations is selected from a normal population where the population standard…

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Q: X is a normally distributed variable with a mean of 200 and a standard deviation of 30. What is the…

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Q: The net weight of a can of salmon is a random variable with a mean of 6.07 ounces and a standard…

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Q: A simple random sample of 100 observations was taken from a large population. The sample mean and…

A: Given that ,                    sample size n=100                    Mean u=80…

Q: the mean number of B's on a test is 8 with a standard deviation of 1.5. find  The probability of…

A: Consider a random variable X which follows normal distribution indicating the number of B’s on a…

Q: A random variable follows normal distribution with mean 24 and standard deviation 4. Find z score…

A: Solution: From the given data, For a normal population, Mean μ = 24 Standard deviation σ = 4

Q: Convert score 46 to z-score if the mean is 40 and the standard deviation is 4.

A: The definition of a z-score is:   z = (X - μ) / σ

Q: A random sample of 18 light bulbs is drawn from a normally distributed population. The population…

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Q: Energy consumption for single family comes is a mean of 1050kw and standard deviation of 218kw. Find…

A: Given information- Population mean, μ = 1050 kw Population standard deviation, σ = 218 kw We have to…

Q: A random variable Y has normal distribution with a mean of 80 and a standard deviation of 15.  What…

A: Mean()=80Standard deviation()=15

Q: Scores on a certain standardized test have a mean of 500, and a standard deviation of 50. How common…

A: Given: Meanμ=500 Standard Deviationσ=50 The probability that the score is between 350 and 400 is…

Q: an exam score has a mean of 506 and a standard deviation of 100. What exam score corresponds to a…

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Q: Assume the random variable X is normally distributed with a mean of 50 and a standard deviation of…

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Q: home study time (in hours) college freshmen each week is a normal variable with a mean of 23.2 h.…

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Q: A random variable follows binomial distribution with parameters n = 43 and p= 0.56 Find the mean…

A: From the provided information, Sample size (n) = 43 And p = 0.56

Q: Find the standard error of the sample mean such that we have 60 random samples with mean 25 and…

A: Sample size(n)=60mean=25standard deviation(s)=13

Q: Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard…

A: Introduction: If P4 denotes the 4th percentile, then observations lie below P4 with 4% or 0.04…

Q: A random variable is normally distributed with mean 84.2 and standard deviation 17.5. What value is…

A: Solution: Let X be the random variable. From the given information, X follows normal distribution…

Q: The random variable X has a uniform distribution with values between 15 and 25. What is the mean…

A: X follows Uniform distribution (15, 25)

Q: Mean=126 millimeters and standard deviation=8 millimeters. If random sample of 37 bolts is selected,…

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Q: A population of normal distribution is having mean 64 and standard deviation 13. A random sample…

A: Answer: From the given data, Population mean μ = 64 Population standard deviation σ = 13 Sample size…

Q: Random samples of size 46 are drawn from a population with mean 161.9 and standard deviation 16.1.…

A: From the given information, μ=161.9σ=16.1n=46 Mean of the sampling distribution of sample mean is,…

Q: The random variable X has a uniform distribution with values between 13 and 21. What is the mean?…

A: Given,A random variable X~U(a=13 , b=21)f(x)=1b-a; a≤x≤bf(x)=121-13f(x)=18  ;  13≤x≤21

Q: State whether the z-score locates the raw score x within a sample or within a population…

A: Solution: Given data ×=50,        s=5, x̄ =40  To find: Whether the z-score locates the raw score x…

Q: S = 2722 - 16,900/7 7-1

A: The given equation is:

Q: On an exam, there is a mean score of 80 with a standard deviation of 12 If each exam is multiplied…

A: we want to find each exam is multiplied by 1.2, New  will mean and new standard deviation are...

Q: A random variable that is normally distributed where mean = 60, standard deviation = 2 and x=55.…

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Q: A random sample of sizen=20 has the mean 20 and standard deviation 5. What is the standard error of…

A: It is given that, Standard deviation,σ=5 Sample size, n=20