5. The variation of copper content in a particular ore body follows a normal distribution. The coefficient of variation is 18%. The probability that the copper content exceeds 18.2 is 0.2389. (Note: Coefficient of Variation = (0/μ) 100% a.) What is the mean copper content? b.) What is the standard deviation of the copper content? c.) What is the probability that the copper content will be less than 11.2²

Q: Find the​ z-score for the value 87​, when the mean is 82 and the standard deviation is 8. A. z=−0.96…

A: Given,mean(μ)=82standard deviation(σ)=8and the value(x)=87

Q: Assume that the readings at freezing on a batch of thermometers are Normally distributed with mean…

A: Let the random variable Y denote readings at freezing on a batch of thermometers. It is given that…

Q: Assume the readings on thermometers are normally distributed with a mean of 0degrees°C and a…

A: We have to find probability..

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A: Let X be a random variable such that X: the readings at freezing on a batch of thermometers X~N0,1

Q: Ex8: Assume that the current measurements in a strip of wire follow a normal distribution with a…

A: Assume that the current measurements in a strip of wire follow a normal distribution.

Q: The correlation between a serials fiber and potassium contents is r = 0.898. What fraction of the…

A: Given that  r = 0.898

Q: В. May completed the 100 m event in the athletic meet in 14.2 s. The standard deviation of the time…

A: B. Given, Her time =x =14.2 Sd of time of all contestants = σ =0.92 Standard score of her time =…

Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: Step 1: Sketch the regionSince we are making a graph for a bone density test score between -2.05 and…

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: The number of earthquake notifications per year in a community follows the probability mass function…

A:

Q: Let X = number of miles a family travels for summer vacation. X follows a normal distribution with a…

A: From the given information,X follows a normal distribution with a mean of 311 miles and standard…

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A: Given that, The readings at freezing on a batch of thermometers are normally distributed with a mean…

Q: Assume that thermometer readings are normally distributed with a mean of 0°C and a standard…

A:

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0 degrees   and…

A:

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A: Given Information:  Mean = 0 degrees Standard Deviation = 1.00 degree The z score at 94 percentile…

Q: 24. The probability that a river flow exceeds 2000 m3/sec is 15%. The coefficient of variation of…

A:

Q: that a randomly selected adult has an IQ between 91 and 119. Click to view page 1 of the table,…

A:

Q: Juan makes a measurement in a chemistry laboratory and records the result in his lab report. The…

A: The standard deviation of students lab measurements is 8. Juan repeats the measurement 2 times. That…

Q: The mean of a set of data is 4.68 and its standard deviation is 2.83. Find the z score for a value…

A: Reviewing information, Given, μ=mean=4.68σ=standard deviation=2.83x=9.38

Q: Scores on the SAT form a normal distribution with a mean of µ = 500 with σ = 100. If the state…

A:

Q: The IQ's in a certain population are normally distributed with a mean score of 104 and a standard…

A: Given, Mean =104 standard deviation =14

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ = 105 and a…

A: Suppose the random variable x defines IQ scores of an adult.

Q: The average age of bank managers is 40 years. Assume the variable is normally distributed. If the…

A: The standard normal distribution is a distribution is derived from the normal distribution. In this…

Q: A biologist is attempting to determine the mean weight of African elephants. She conducts a sample…

A: The random variable weight of African elephants follows normal distribution. The sample size is 60.…

Q: Assume that the heights of women are normally distributed with a mean of 63.6 inches and a standard…

A: Obtain the value of the Z-score for the sample mean of the random variable equals 63.0 inches. The…

Q: The mean July daily rainfall in Waterville is 10mm and the standard deviation is 1.5mm. Assume that…

A: Let, X = Amount of rainfall in July. Given that the data is normally distributed with mean 10mm and…

Q: ndard deviation is sample of 45 indiv

A: a) The average number of kilos of meat is 90 and SD is 10μ=90σ=10n=45b) The average number of kilos…

Q: The average number of kilos of meat a person consumes in a year is 110 kilos. Assume that the…

A: 1)GivenMean(μ)=110standard deviation(σ)=12sample size(n)=45

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A: