1 the normal range for cholesterol for an adult is 120 -, Ask an Expert

Statistics

1. The normal range for cholesterol for an adult is 120 - 240mg/dl. A study found that the total cholesterol level for American adults has a mean of 159.2mg/dl and 84.1 of adults have a cholesterol level below 200mg/dl. Assuming that cholesterol level is normally distributed;

a. Determine the standard deviation of this distribution

b. What are the quartiles (the 25% and 75% values) of this distribution?

c. What is the value of the cholesterol level that exceeds 90% of the population?

d. An adult is at moderate risk if cholesterol level is more than one but less than two standard deviations above the mean. What percentage of the population is at moderate risk according to this criterion?

e. An adult is at high risk if cholesterol level is more than two standard deviations above the mean. What percentage of the population is at high risk?

f. An adult is at low risk if cholesterol level is one standard deviations or more below the mean. What percentage of the population is at low risk?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91789726

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

In a pre-election poll a candidate for district attorney

In a? pre-election poll, a candidate for district attorney receives 253 of 500 votes. Assuming that the people polled represent a random sample of the voting? population, test the claim that a majority of voters support ...

In an intro psychology class all 83 students have completed

In an Intro Psychology class, all 83 students have completed an aggression rating scale. The possible ratings range from 1-7 with low scores indicating low aggression. Results showed that the average rating was 4.23 with ...

Find the modified internal rate of return mirr the annual

Find the modified internal rate of return (MIRR) The annual rate is 8.24%. Initial outlay is $356,800. Year 1: $163,100 Year 2: $173,100 Year 3: $181,300 Year 4: $175,700 Year 5: $161,400

Assume a random sample of n 5 measurements from a normal

Assume a random sample of n = 5 measurements from a normal distribution. Compare the standard normal z-values with the corresponding t-values if you were forming an 80% confidence interval.

A fair coin is flipped 100 times your friend proposes a bet

A fair coin is flipped 100 times. Your friend proposes a bet where if it lands on heads 49, 50, or 51 times, you win $4, but if it lands on heads more than 51 times or less than 49 times, you lose $1. Should you take the ...

The number of cell phones per 100 residents in countries in

The number of cell phones per 100 residents in countries in Europe is given in table 9.3.9 for the year 2010. The number of cell phones per 100 residents in countries of the Americas is given in table 9.3.10 also for the ...

Suppose a life insurance company sells a 230000 one-year

Suppose a life insurance company sells a $230,000 ?one-year term life insurance policy to a 20?-year-old female for ?$330. The probability that the female survives the year is 0.999642. Compute and interpret the expected ...

Xyz corporations budgeted monthly sales are 10000 and they

XYZ Corporation's budgeted monthly sales are $10,000, and they are constant. Its customers pay as follows: 30% pay in the first month and take the 2% discount, while the remaining 70% pay in the month following the sale ...

Seedlings come in packages of 10 and consist of the

Seedlings come in packages of 10 and consist of the following: 2 Douglas-fir, 3 spruce, and 5 pines. In any given package, how many ways can the 10 seedlings be arranged if seedlings that are the same species cannot be d ...

If sailsboro just paid a dividend of 2 per share amp

If Sailsboro just paid a dividend of $2 per share & dividends are expected to grow at 8%, 6%, and 5% for the next three years respectively. After that the dividends are expected to grow at a constant rate of 3% indefinit ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert