Suppose that heights of 10-year-old boys in the US vary according to a normal distribution with mean of 138 cm and standard deviation of 7. What is the probability that the height of a randomly selected boy is greater than 145 cm?  Is it 0.1357? Is it 0.1151? Is it 0.1841? Is it 0.1587?

Q: ily electricty use is i.i.d. with mean of 90 kWh (kilowatt hours) and a standard deviation of 8 kWh.…

A: Here it is given that - Mean (μ) = 90 Standard deviation (σ) = 8 Total number of sample(n) = 100 Let…

Q: A population has a mean of 33 and a standard deviation of 5 . What is the probability that the…

A: Population mean=33Population standard deviation=5Sample size n=58

Q: Suppose the scores on a statistics exam follow a normal distribution with a mean of 70 and a…

A: GivenMean(μ)=70standard deviation(σ)=10

Q: The weight of trucks traveling on a particular section of I-475 has a population mean of 15.8 tons…

A: Central limit theorem: The central limit theorem implies that the distribution of the sample means…

Q: Harry’s commuting times to work have a normal distribution with a mean of 45 minutes and standard…

A: Given: μ = 45 minutes σ = 10 minutes   Formula Used: Z-score = X-μσ

Q: Suppose one value is selected from a uniform distribution with a = 0 and b = 11. What is the…

A: Given: X~U(0,11) a=0 b=11

Q: The height of an adult male in the United States is approximately normally distributed with a mean…

A: Answer: From the given data, Let X represents the height of an adult male in the United States X is…

Q: Assume that newborn girls have birth weights with a mean of 3022 grams and a standard deviation of…

A: μ=3022σ=716n=100

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: 2. Suppose the current annual salary of all teachers in the United States have a normal distribution…

A: Given that.   X~N( μ , ?)   μ=81000     , ?=6500   Z-score =( x - μ )/?

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: It is estimated that the weight of a box of cereal follows a normal distribution with a mean of 23.8…

A: From the given information,   Mean = 23.8 Standard deviation = 2.2   The objective is to find the…

Q: the life expectancy for a species of certain insects is normally distributed with mean of 14.3…

A: It is given that the mean is 14.3 and the standard deviation is 4.3.

Q: The height of students studying at a language school follows a normal distribution with a mean of…

A: Given: The data on the height of the students that are studying at a language school. The number of…

Q: Suppose the weight of an adult male Labrador is normally distributed with u=71.2 pounds and a…

A: Mean()=71.2standard deviation()=3.4

Q: Suppose IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What…

A:

Q: What is the probability a randomly selected student's score is between 402 and 509.92?

A: It is given that  Mean, μ = 438 Standard deviation, σ = 58 Z-Score, Z = ( X - μ )/σ

Q: A Nielsen Company report states that the mean number of TV sets in a U.S. household is 2.12. Assume…

A: Draw the normal curve and shade the area to the right of z=-0.1. Since the total area under the…

Q: the amount of snowfall falling in a certain mountain range is normally distributed with a mean of 88…

A: It is given that the normal distribution has a mean, μ=88 and the standard deviation, σ=16. The…

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

A:

Q: The height of an adult male in the United States is approximately normally distributed with a mean…

A: From the provided information, Mean (µ) = 69.0 Standard deviation (σ) = 2.6  X~N (69.0, 2.6)

Q: A normal distribution has a mean 80 and standard deviation is 10. What is the probability of…

A: Given:    µ = 80     σ = 10

Q: Historically, the average score of PGA golfers for one round is 65 with a standard deviation of…

A: Answer:- Given , the average score of PGA golfers for one round is (µ) 65 with a standard deviation…

Q: It is estimated that the weight of a box of cereal follows a normal distribution with a mean of 23.8…

A: Solution: Let X be the weight of a box of cereal. From the given information, X follows normal…

Q: Suppose IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What…

A: GIVEN DATA μ=100σ=15PROBABILITY THAT A RANDOM SAMPLE OF 100 PEOPLE HAS A MEAN IQ OF MORE THAN 104…

Q: In the United States, men’s heights have mean of 69 inches, and standard deviation of 3 inches.…

A: Let X be the height of men in United States. X follows normal distribution that has mean µ = 69 and…

Q: According to Nielsen Company, the mean number of TV sets in a US household in 2013 was 2.24.  Assume…

A: As per our guidelines we are suppose to do first three sub parts only

Q: he number of customers at a coffee shop per day follows a normal distribution with a mean of 3,500…

A: given data, normal distributionμ=3500σ=250probability that the coffee shop will serve more than…

Q: The annual precipitation amounts in a certain mountain range are normally distributed with a mean of…

A: Solution: Let X be the annual precipitation amount in a certain mountain range. From the given…

Q: Historically, the average score of PGA golfers for one round is 74 with a standard deviation of…

A: Given,sample size(n)=110mean(μ)=74standard deviation(σ)=3.91

Q: A population has mean of 150 and standard deviation of 20. What is the probability that a random…

A:

Q: the average score on s math test is 75 with a standard deviation of 8. What is the probability that…

A: The Z-score for the random variable X equals 90 is obtained below as follows: The Z-score for the…

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: 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: The annual salary for an emergency room nurse is a normally distributed random variable with a mean…

A: Suppose the random variable x defines the annual salary for an emergency room nurse.