Of a large group of men 5 per cent are under 60 inches in height and 40 per cent are between 60 and 65 inches. Assuming a normal distribution, find the mean height and standard deviation?

Q: Assume that weights of men are normally distributed with a mean of 160 pounds and a standard…

A: Given, Weights of men follows normal distribution with mean 160 pounds and standard deviation 25…

Q: In a Normal distribution 7% items are under 35 and 89% are under 63. Find its mean and standard…

A:

Q: According to data for a​ population, 3-year-old boys have a mean height of 38 inches and a standard…

A: given data normal distributionμ = 38 inchesσ = 2 inchesfor x = 42 inchespercentile = ?

Q: Use the normal distribution below for the prices of a high end HD television to answer the question.…

A: as we know empirical rule:  approximately 68 -95 -99.7% data fall within 1σ-2σ-3σ of μ.

Q: If the height of 1000 students in a University Campus closely follows a normal distribution with a…

A:

Q: The mean rate for cable t.v.from a sample of 80 households was $29 per month with a standard…

A:

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

A:

Q: In a standardized exam the mean score is 400 with a standard deviation of 50. Assume the scores…

A: Solution

Q: What proportion of skiers will finish the race in exactly one minute?

A: The tume it takes for downhill skiers to finish a race follows a Normal distribution with a mean of…

Q: Assume the distribution is normal, use the area of the normal curve to answer the question. At a…

A: Suppose a random variable X, defines the weekly grocery bill.

Q: Last year the revenue for utility companies had a mean of $60 million with a standard deviation of…

A:

Q: given a normal distribution with mean of 40 and standard deviation of 6, find

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Q: A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose…

A: A) option A is the answer. Answer : Since the distribution of time spent eating and drinking each…

Q: Assume that the hourly cost to operate a commercial airplane follows the normal distribution with a…

A: Consider X be a random variable which follows normal distribution indicates the operating cost of a…

Q: Among coffee drinkers, men drink a mean of 3.2 cups per day with a standard deviation of 0.8 cups.…

A: Let X  denote the number of coffee drinks per day follows a normal distribution. That is, The…

Q: A successful basket ball player has a height of 6 feet 4 inches. Based on statistics his height…

A: As given, The basketball player has a height of 6 feet 4 inches and when his height is converted to…

Q: The amount dispensed by a cola machine follows the normal distribution with a mean of 7 ounces and a…

A: Given, μ = 7σ = 0.10p = 0.01         To find value of x?

Q: The annual per capita consumption of ice cream (in pounds) in the United States can be approximated…

A: We have given that  Mean(µ) = 20.7Standard deviations (σ) = 4.2

Q: Smelt is a type of flood fish. Smelt lengths are normally distributed with a mean of 15 cm and a…

A: Given: µ = 15 σ = 1

Q: A normal distribution has a mean of 3.7 and a standard deviation of 2.3. What is the median?

A: From the provided information,

Q: In a normal distribution, find the proportion of the population within three fifths of a standard…

A: We have to find out given proportion..

Q: The quartiles of any distribution are the 25th and 75th percentiles. About how many standard…

A: 25th Percentile = P(Z <z ) = 0.25 For normal table  P(Z < -0.67 ) = 0.2514 Hence, 25th…

Q: The height of men in the United states fits with a normal distribution with a mean of 70 inches and…

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Q: According to a recent survey, the salaries of assistant professors have a mean of $41,750 and a…

A: Solution: Let X be the salaries of assistant professors. From the given information, X follows…

Q: otal cholesterol in children aged 10 to 15 years of age is assume to follow a normal distribution…

A:

Q: Suppose that vehicle speeds at an interstate location have a normal distribution with a mean equal…

A: The random variable vehicle speed follows normal distribution. The population mean is 70. The…

Q: A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose…

A:

Q: Sacks of grain have an average weight of 120 Kilograms. It is found that 10% of the bags are over…

A: let X: weight of the bags.X~N(μ,σ)where  mean(μ)=120 kg.and given P(X>125)=10%=0.10  find…

Q: The annual per capita consumption of bottled water was 33.3 gallons. Assume that the per capita…

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: Assume that the time a student stays in school is normally distributed with a mean of 5 hours and a…

A: Normal distribution is a continuous distribution which has many real life applications. Normal curve…

Q: Assume that in a men's basketball league the distribution of heights has a mean of 6 feet, 6 inches,…

A: Let X be the height of the men follows normal distribution with mean μ=6 feet 6 inches=78 inches…