Body mass index (BMI) is computed as the ratio of weight in kilograms to height in meters squared. The distribution of BMI is approximately normal for specific gender and age groups. For females aged 30 - 39, the mean BMI is 24.5, with a standard deviation of 3.3. Suppose we classify females aged 30 - 39 in the top 5% of the BMI distribution as extremely high risk. What is the threshold for classifying a female as extremely high risk ?

Q: an exam score has a mean of 506 and a standard deviation of 100. What exam score corresponds to a…

A: μ  = 506 , σ = 100  Z~ N(0,1)

Q: Low‑density lipoprotein, or LDL, is the main source of cholesterol buildup and blockage in the…

A: The 68-95-99.7% Rule:For a normal distribution, the empirical rule (68-95-99.7% Rule) state that…

Q: The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult males…

A: The mean is 5.8 and the standard deviation is 0.3.

Q: ASSUME THAT FAMILY INCOMES ARE NORMALLY DISTRIBUTED WITH MEAN 30,000 AND STANDARD DEVIATION OF…

A: Given Mean (μ) = 30000 standard deviation (σ) = 10000 X = 10000

Q: According to a recent survey, the salaries of assistant professors have a mean of $40,756 and a…

A: Determine the Z score for the random variable X equals 45,000. The Z score for the random variable…

Q: Assume that a normal distribution of data has a mean of 12 and a standard deviation of 3. Use the…

A:

Q: The incomes of trainees at a local mill are normally distributed with a mean of $1100 and a standard…

A: The provided information are: Population mean (µ) = 1100 Population standard deviation (σ) = 150…

Q: The distribution of scores on the SAT is approximately normal with a mean of μ = 500 and a standard…

A: Given data,μ = 500σ = 100.

Q: A distribution has a mean of 16 and a standard deviation of 6. What is the Z score that corresponds…

A: A value from any normal distribution can be transformed into its corresponding value on a standard…

Q: The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult males…

A: The following information has been given: The population mean is μ=5.5. The population standard…

Q: Assume that a normal distribution of data has a mean of 11 and a standard deviation of 3. Use the…

A: Given : for a normal distribution of data, mean = 11   and standard deviation = 3  To find the…

Q: The lifetime of a 2-volt non-rechargeable battery in constant use has a Normal distribution, with a…

A: Given: μ=516σ=20 The proportion of batteries with lifetimes exceeding 520 hours is obtained as…

Q: The lifetime of a 2‑volt non‑rechargeable battery in constant use has a Normal distribution, with a…

A: It is known that X is the lifetime of a 2‑volt non‑rechargeable battery with mean 516 hours and a…

Q: Assume that family incomes are normally distributed with mean 30,000php and a standard deviation of…

A: Given :  Mean = 30000 Sd = 10000

Q: The lifetime of a 2‑volt non‑rechargeable battery in constant use has a Normal distribution, with a…

A: It is known that X is the lifetime of a 2‑volt non‑rechargeable battery with mean 516 hours and a…

Q: Low‑density lipoprotein, or LDL, is the main source of cholesterol buildup and blockage in the…

A: 68-95-99.7% rule:In normal distribution, the empirical rule of 68-95-99.7% rule states that 68% of…

Q: The lifetime of light produced by a company is normally distributed with standard deviation of 80…

A: Let X : Lifetime of light produced by a company is normally distributed with  Standard deviation (σ)…

Q: Hours of sleep per night for an adult are normally distributed with a mean of 7.2 hours and a…

A: From the provided information, Mean (µ) = 7.2 hours Standard deviation (σ) = 1.9 X ~N (7.2, 1.9)…

Q: The weights of miniature horses are roughly normally distributed with a mean of 230 pounds and…

A: Given : The weights of miniature horses are roughly normally distributed with a mean of 230 pounds…

Q: What value lies under a standard score of 1.5 in a distribution having a mean of 55 and standard…

A:

Q: The red blood cell counts (in millions of cells per microliter) for a population of adult males can…

A: From the provided information, Mean (µ) = 5.5 Standard deviation (σ) = 0.3 X~N (5.5, 0.3)

Q: A mandatory competency test for high school sophomores has a normal distribution with a mean of 400…

A:

Q: According to the Empirical Rule, the percentage of observations in a data set (providing that the…

A: In statistics, the empirical rule says that for normal distribution, 68%, 95%, and 99.7% of the…

Q: The IQ of 1,000 incoming students at University of Bayabas is normally distributed with a mean of…

A: Mean = 103 Standard deviation=10

Q: A study conducted by the Center for Population Economics at the University of Chicago studied the…

A: Given, Newborns weight having bell-shaped with mean 3364 and standard deviation 896. n = 671

Q: The distribution of scores on the SAT is approximately normal with a mean of μ = 500 and a standard…

A: Given : The distribution of scores on the SAT is approximately normal with a mean of μ = 500 and a…

Q: A study conducted by the Center for Population Economics at the University of Chicago studied the…

A:

Q: The fuel efficiency of cars currently registered in the Commonwealth of Virginia is normally…

A: X follows a Normal distribution with mean = 24 and S.D = 6 Then z=(x-mean)/SD = (x-24)/6  follows…

Q: The quality grade-point averages of 300 college freshmen follow approximately a normal distribution…

A:

Q: The data in a data set are normally distributed with a mean of 190 and a standard deviation of 30.…

A: ∗Mean μ=190    standard  deviation σ=30    X~N 190,30 we need to find,   PX<130+PX>250=P…

Q: The lifetime of a 2‑volt non‑rechargeable battery in constant use has a Normal distribution, with a…

A: It is known that X is the lifetime of a 2‑volt non‑rechargeable battery with mean 516 hours and a…

Q: The red blood cell counts (in millions of cells per microliter) for a population of adult males can…

A: (a) Obtain the minimum red blood cell count that can be in the top 29% of counts. The minimum red…

Q: The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult males…

A: Let us denote: X= The red blood cell count So, X follows a normal distribution with mean= 5.3 and…

Q: According to a recent report, people smile an average of μ= 62 times per day.  Assuming that the…

A: Given Information: According to a recent report, people smile an average of μ= 62 times per day and…

Q: The Atlanta Braves baseball team has a mean batting average of 250 with a standard deviation of 20.…

A:

Q: Assume that a normal distribution of data has a mean of 16 and a standard deviation of 4 Use the…

A: Given X is normal Distributed with mean µ = 16.0 and standard deviation σ = 4.0 now will using…

Q: A study conducted by the Center for Population Economics at the University of Chicago studied the…

A:

Q: The data in a data set are normally distributed with a mean of 190 and a standard deviation of 20.…

A: Given information Mean µ = 190 Standard deviation σ = 20

Q: he red blood cell counts​ (in millions of cells per​ microliter) for a population of adult males can…

A:

Q: Body temperatures of adults have normally distributed with a mean of 98.60 °F and a standard…

A: 1. Let X be the body temperature of adults. From the given information, X follows normal…

Q: According to the National Health and Nutrition Examination Survey, published by the National Center…

A: Let X be the serum (noncellular portion of blood) total cholesterol level of U.S. females 20 years…

Q: The weights of miniature horses are roughly normally distributed with a mean of 230 pounds and…

A:

Q: The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult males…

A: The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult males…

Q: The annual per capita use of apples (in pounds) in the United States can be approximated by a normal…

A:

Q: The distribution of scores on the SAT is approximately normal with a mean of µ = 500 and a standard…

A:

Q: The data in a data set are normally distributed with a mean of 150 and a standard deviation of 30.…

A: In this problem, we are going to using The empirical rule(68-95-99.7 Rule)

Q: If the weight of fertilizer in a 40-pound bag is normally distributed with a standard deviation of…

A: Define  the Random Variable, X : Weight of fertilizer in the bag. X ~ N(40,0.52) Hence , the mean, µ…

Q: The total cholesterol levels of a sample of men aged 35-44 are normally distributed with a mean of…

A: a.The percent of the men have a total cholesterol level less than 212 milligrams per deciliter of…

Q: e distribution of the amount of money spent by first-time gamblers at a major casino in Las Vegas is…

A: Given that  The distribution is normal. Mean (μ)= $600 Standard deviation (σ) = $120   We know that…

Q: Low-density lipoprotein, or LDL, is the main source of cholesterol buildup and blockage in the…

A: Solution: Let X be the LDL level. From the given information, X follows normal distribution with…