The mean total cholesterol for a population of men between the ages of 20 and 29 is 180 micrograms per decilitre with a standard deviation of 37.4. A healthy total cholesterol level is less than 200, 200-240 is border line, and above 240 is dangerous. Assume the distribution is approximately Normal. For a randomly selected man from this group, what is the probability that his total cholesterol level is 200 or more? Between 200 and 240? On a standardized test, scores are normally distributed with a mean of 400 and a standard deviation of 80. What score must one have to be in the 80th percentile?

Q: What is the probability that your score on an exam will be less than 65, if the mean on the exam is…

A: Let X be a continuous random variable of score on the exam is normally​ distributed with a mean of…

Q: Triglycerides are a type of fat in the bloodstream. The mean triglyceride level in the United States…

A: Mean()=134standard deviation()=35

Q: Assume that the total cholesterol levels for adults are normally distributed with mean cholesterol…

A: Given data: Mean =  51.8 mg/dL Standard deviation  = 14.3 mg/dL To find: Find the probability that…

Q: . What is the probability that the student will get into a college whose entrance score is 550?

A:

Q: The National Health and Nutrition Examination Survey (NHANES) reported that in a recent year, the…

A:

Q: me that a randomly selected subject is given a bone density test. Those test scores are normally…

A: test scores are normally distributed with a mean of 0 and a standard deviation of 1  find the…

Q: The math department at a university gives all of the students in a certain math class the same final…

A: Let  denote the student score receive in the final exam.The random variable  follows a normal…

Q: No hand written solution and no img  Attendance at large exhibition shows in Denver averages about…

A: Given  average (μ)=8000 standard deviation (σ)=500 Find P(X<6300)=?

Q: 25. The distribution of total body protein in healthy adult men is approximately Normal, with mean…

A: Given data: Mean = 12.3 kg Population standard deviation  = 0.1 kg  ~ Normal distribution

Q: What is the probability that your score on an exam will be less than a 60, if the mean on the exam…

A: We have to find probability that your score on an exam will be less than a 60....

Q: Bryse is 27 years old. Based on a normal distribution with mean 47.8 years and standard deviation…

A: GivenBryse is 27 years oldx=27Mean(μ)=47.8standard deviation(σ)=12.6

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 mean annual cost of automobile insurance is $939. Assume that the standard deviation is a =…

A: GivenMean(μ)=939standard deviation(σ)=245sample size(n)=50

Q: The distribution of raw scores on a chemistry final is approximately normal with a mean of about 50…

A: The random variable X is defined as the student will have a raw score which follows normal…

Q: It is known that the distribution of the soda consumption by teenagers follows a normal distribution…

A: Answer: - Given,  X ~ N(μ,σ)                 Where, μ  = 12,   and σ = 4                 What is the…

Q: Almost all medical schools require applicants to take the Medical College Admission Test (MCAT).  To…

A: It is given that the mean is 25 and the standard deviation is 6.5.

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

A:

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

A: We are given,μ = 196σ = 22n = 60

Q: The daily high temperature for the month of August in Chicago is normally distributed with a mean of…

A: Let X be the high temperature for the month of August in Chicago is normally distributed with a mean…

Q: A certain standardized tests math scores have a bell shaped distribution with a mean of 525 and a…

A: GivenMean(μ)=525standard deviation(σ)=105

Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: The test scores are -1.64 and 1.64.

Q: On the final exam in a large statistics class the average score was 76 with a standard deviation of…

A:

Q: Assume that a randomly selected subject given a bone density test. Those test scores are normally…

A:

Q: Body temperatures of adults are normally distributed with a mean of 98.60 Fahrenheit and a standard…

A: The Z-value of a random variable X is defined as follows: Here, the mean and standard deviation of…

Q: If the normal operating life of a car is considered to be 150,000 miles, with a standard deviation…

A: The probability that a car will last 200,000 miles is calculated as follows:

Q: A set of final examination grades in an Introductory Statistics course is normally distributed with…

A: We have given that,  X be the test score with mean (μ) = 73 and standard deviation (σ) = 8 and The…

Q: The physical fitness of an athlete is often measured by how much öxygen the athlete The mean maximum…

A:

Q: the quality grade point averages of 300 college freshmen follow approximately the normal…

A: Given: X~N(μ,σ)μ=2.1σ=0.5 n=300

Q: The average score of all golfers for a particular course has a mean of 61 and a standard deviation…

A: Mean()=61Standard deviation()=4Sample size(n)=64

Q: Brenda has collected data to find that the finishing times for cyclists in a race has a normal…

A: Given the finishing time for cyclists in a race has normal distribution with mean 143 minutes and…

Q: the mean is 146, and standard deviation is 35. A score of 181 is how many z-scores above the mean?

A:

Q: The scores on a national achievement exam are normally distributed with a mean of 500 and a standard…

A: Given data: Mean =  500 Standard deviation = 100 To find: P( X < 600 ) = ?

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

A: From the provided information, Mean (µ) = 92 inches Standard deviation (σ) = 13 inches X~N (92, 13)…

Q: Diastolic blood pressures are assumed to follow a normal distribution with a mean of 85 and a…

A:

Q: Nick has collected data to find that the body weights of the forty students in a class has a normal…

A: Given: According to the empirical rule,

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.