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?   a. 0.1357   b. 0.1151   c. 0.1841   d. 0.1587

Q: Assume that adults have IQ scores that are normally distributed with a mean of 96.8 and a standard…

A: Let "X" be the IQ score of the adults.

Q: Medical research has concluded that people experience a common cold roughly two times per year.…

A: The mean of the normal distribution, The standard deviation of the distribution,

Q: Suppose the annual rainfall in the Southern California (in inches) is normally distributed with mean…

A: The mean is 10 and the variance is 25. The standard deviation is √variance=√25=5.

Q: he lengths of pregnancies are normally distributed with a mean of 267 days and a standard deviation…

A:

Q: a typical adult has an average IQ score of 105 with a standard deviation of 20. If 19 randomly…

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Q: Suppose that NBA players average 34.4 points per game with a standard deviation of 8.65. A random…

A: GivenMean(μ)=34.4standard deviation(σ)=8.65sample size(n)=138

Q: If x is a normally distributed variable with a mean of 151.7 and a standard deviation of 21.9, what…

A: GivenMean(μ)=151.7standard deviation(σ)=21.9

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A: Answer Sample size [n] =50Mean =196Standard deviation =22

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: Find the probability that 1 man has weight greater than 160 lb. Assume that weights of males are…

A: Let X represent the random variable Mean=182.9 SD=40.8   X~ Normal (182.9, 40.82)

Q: Assume that 26% of students at a university wear glasses. Suppose 300 students are randomly…

A:

Q: Normal distribution. Assume the height of female 20-29 year-old is normally  distributed with a mean…

A: Note: As you have specifically asked for help with subparts d, e, and f, we have helped you solve…

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 weekly amount spent by an event management company for travel has approximately a normal…

A: From the provided information, Mean (µ) = $2500 Standard deviation (σ) = $400 Let X be a random…

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: 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: Find the probability that a randomly selected adult has an IQ greater than 129.9.

A: Let X denote the IQ scores. Given that X follows N(mean = 98.6, SD = 18.5), then Z = (X - mean)/SD…

Q: Assume that blood pressure readings are normally distributed with a mean of 135 and a standard…

A: According to the given information, we have Mean = 135 Standard deviation = 4.7 Sample size = 35

Q: Assume the probability that a maple tree at age 5 grows less than 130 cm is equal to 0.1. If the…

A:

Q: Assume that blood pressure readings are normally distributed with a mean of 123 and a standard…

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Q: Suppose a population has a mean happiness score of 75 and a standard deviation of 15. Researcher A…

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Q: Find the probability that the mean height of the sample is greater than 58 inches.

A: Assume that the height of adult females in the United States is approximately normally distributed…

Q: The lengths of pregnancies are normally distributed with a mean of 266 days and a standard…

A:

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

A:

Q: The number of automobile accidents per week in Toronto is normally distributed with a mean of 16.3…

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of 104.7 and a standard…

A: It is given that the IQ score follows normal distribution with mean 104.7 and standard deviation…

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

A: Given that : Mean =100 Standard Deviation =15 We have to find the probability a random person has an…

Q: Normal distribution. Assume the height of female 20-29 year-old is normally  distributed with a mean…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

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 that an airline uses a seat width of 17.1in. Assume men have hip breadths that are normally…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: Data from the Bureau of Labor Statistics’ Consumer Expenditure Survey show that annual expenditures…

A: Given information- For the year 2001- Population mean, µ = $235 Population standard deviation, σ =…

Q: Assume that the height of a type of tree has a normal probability distribution with a mean of 55.2…

A: Given that, Assume that the height of a type of tree has a normal probability distribution with a…

Q: Suppose the durations of human pregnancies follow a mound-shaped distribution with a mean of 266…

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Q: At an airline company, according to the records, the mean age of pilots is 36.2 years, and the…

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Q: 4. The systolic blood pressure reading for a person varies throughout the day. Assume that for a…

A: The normal distribution is used in statistics to calculate probabilities.

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: Suppose that heights of women at UT Tyler are normally distributed with a mean of 64 inches and a…

A: It is given that the mean is 64 and standard deviation is 2.4.

Q: Assume that a basketball game final scores are normally distributed with a mean of 75 and a standard…

A: Mean = 75Standard deviation = 8

Q: Find the probability that a randomly selected adult has an IQ greater than 136.4

A: Let X denote the IQ scores of adults. Given that X follows N(mean = 101.3, SD = 20.2), then  Z = (X…

Q: Suppose the average amount of money that people spend on their pets per month is 47 dollars, with a…

A: From the Standard Normal table, the bottom of 30% is -0.5244. The average amount of money spent on…

Q: Suppose that the walking step lengths of adults are normally distributed with a mean of 2.4 feet and…

A:

Q: Assume that the height of a type of tree has a normal probability distribution with a mean of 85.9…

A: Let us denote X= height of a tree Given that X follows a normal distribution with mean=85.9 and…