Recall that the foot length of a randomly chosen adult male is a normal random variable with mean μ=11 and standard deviation σ=1.5   What is the probability that a male's foot length is smaller than 9.5 inches?  What is the probability that a male's foot length is longer than 15.5 inches?

Q: The final scores of students in a graduate course are distributed normally with a mean of 72 and a…

A:

Q: Find the probability that a random sample of 36 men will have a mean weight less than 190 lbs

A: Given: μ=179σ=29n=36 Calculate the corresponding Z score as follows: The probability that a random…

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: The length of timber cuts are normally distributed with a mean of 95 inches and a standard deviation…

A: Given Mean(μ)=95standard deviation(σ)=0.52sample size(n)=45

Q: he results of a statistics examination follow an approximately normal distribution with a mean of 68…

A: Given data,Mean μ=68Variance σ2=64sd     σ=8P(X>82)=?

Q: The results of a statistics examination follow an approximate normal distribution with a mean of 68…

A: Given Data Population Mean,μ = 68.0 Population Standard Deviation,σ = √64 =  8.0

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

A:

Q: Suppose IQ scores are normally distribut a mean of 100 and a standard deviation What is the…

A: Solution:  Let X be the IQ scores are normally distributed with mean 100 and standard deviation 15.…

Q: A veterinary researcher takes an SRS of 60 horses presenting with colic. The average age of the 60…

A: Given that, μ=10,σ = 8,n= 60 The mean and standard deviation of the sampling distribution of sample…

Q: The salaries of employees at XYZ Corporation follow a normal distribution with mean £60,000 and…

A: Note: this probability value calculated from standard normal distribution table.

Q: According to a study done by UCB students, the height for Martian adult males is normally…

A: Find the probability that the person is between 65.1 and 66.4 inches? Let X = height of the…

Q: The net weight of a can of salmon is a random variable with a mean of 6.21 ounces and a standard…

A: Solution

Q: A study indicates that the weights of adults are normally distributed with a mean ? of 140 lbs and a…

A: 1.Let X be the weight of adults. X follows normal distribution that has mean µ = 140 and the…

Q: The manufacturer of cans of salmon that are supposed to have a net weight of 6 ounces tells you that…

A:

Q: It was found that the mean length of 100 parts produced by a lathe was 20.05 mm with a standard…

A: Given: . The z-score is calculated as

Q: he manufacturer of cans of salmon that are supposed to have a net weight of 6 ounces tells you that…

A:

Q: Find the probability that an observation taken from a standard normal population will be more than…

A: We have to find given probability..

Q: What is the probability of randomly selecting a zscore less than z = - 1.25 from a normal…

A:

Q: assume that women's heights are normally distributed with a mean of 63.6 inches and a standard…

A: Mean = 63.6 Standard deviation = 2.5 Sample size = 81

Q: The cholesterol content of large chicken eggs is normally distributed with a mean of 200 mg and…

A:

Q: suppose the walking step lengths of an adult males are normally distributed with a mean of 2.7 feet…

A: Given that  Mean=μ=2.7 Standard deviation=σ=0.3 Sample size=n=70 X~Normal(μ=2.7,σ=0.3)

Q: Suppose that heights of 10-year-old boys in the US vary according to a normal distribution with mean…

A: The objective of this question is to find the probability that the height of a randomly selected…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 98.1 and a standard…

A: Answer:- Given, IQ scores(X) are normally distributed with mean, μ = 98.1 and standard deviation, σ…

Q: The tread life of a particular brand of tire is a random variable best described by a normal…

A: Given,          Meanμ =60,000          standard deviation σ=28

Q: Assume that the average weight of an NFL player is 245.7 lbs with a standard deviation of 34.5 lbs.…

A: It is given that the mean is 245.7, the standard deviation is 34.5 and the sample size is 32.

Q: A random variable X is normally distributed. It has a mean of 229 and a standard deviation of 23.…

A: It is given that the random variable X is normally distributed with mena 229 and standard deviaton…

Q: For a normally distributed random variable the standard deviation is 3.7 what is the mean if 10% of…

A: Given that, σ=3.7 Consider that 10% of the distribution is less than 31.

Q: Christopher has collected data to find that the total snowfall per year in Laytonville has a normal…

A:

Q: The manufacturer of cans of salmon that are supposed to have a net weight of 6 ounces tells you that…

A:

Q: The time college students spend on the Internet follows a Normal distribution. At Johnson…

A: Given,mean(μ)=5standard deviation(σ)=1.2sample size(n)=100

Q: ACT scores at Ardrey Kell High School are Normally distributed with mean 26 and standard deviation…

A: Two sample Z test

Q: Adult males have a mean weight of 179 lbs with a standard deviation of 29 lbs. Find the probability…

A: From the provided information, Mean (µ) = 179 Standard deviation (σ) = 29 X ~N (179, 29) Here X be a…

Q: The tread life of a particular brand of tire is a random variable best described by a normal…

A: The random variable X is the tread life of a particular brand of tire It is normally distributed.…

Q: The MPG (miles per gallon) for a certain compact car is normally distributed with a mean of 30 and a…

A: mean=30, standard deviations=1 Let X be the MPG Given X~N(mean=30, standard deviations=1)