What is the probability of selecting someone at random from, Ask an Expert

Statistics

Suppose the distribution of cholesterol levels for male undergraduates is approximately normal with mean 190 mg/dl and standard deviation 40 mg/dl. Suppose you take a sample 49 cholesterol level readings from this population.

(a) What is the population of the study?
(b) What is the probability of selecting someone at random from this population who has a cholesterol value less than 180?
(c) What is the mean and the standard deviation (error) of ?
(d) What is the probability the mean cholesterol a level is less than 180?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9408457

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Some commercial aircraft fly with two engines assuming that

Some commercial aircraft fly with two engines. Assuming that the aircraft can land safely on a minimum of one engine, what is the probability of a catastrophe (non-safe landing due to engine failure) for the life of the ...

Two people agree to meet at a coffee shop they each

Two people agree to meet at a coffee shop. They each independently pick a random moment in time between 8 a.m. and 9 a.m. and show up exactly at their selected time. But they are very impatient, and only stay for 10 minu ...

Calculating project ocfsummer time inc is considering a new

Calculating Project OCF. Summer Time, Inc. is considering a new 3-year project that requires an initial fixed asset investment of 3.9 million. The fixed asset will be depreciated straight line to zero over its three-year ...

A cell phone company offers 15 different voice packages and

A cell phone company offers 15 different voice packages and 15 different data packages. Of those, 6 packages include both voice and data. How many ways are there to choose either voice or data, but not both?

Jennifers broker has shown her two options in the

Jennifer's broker has shown her two options in the securities market for investment. Security one is a bond of par value of $1,000. The bond has a coupon interest rate of 11% paid annually maturing in seven years, with y ...

Answer the following questions about an anova analysis

Answer the following questions about an ANOVA analysis involving three samples. a. In this ANOVA analysis, what are we trying to determine about the three populations they're taken from? b. State the null and alternate h ...

Consider random samples of size 800nbspnbspfrom a

Consider random samples of size 800 from a population with proportion 0.60. (a) Find the mean and standard error of the distribution of sample proportions. Round your answer for the mean to two decimal places, and your ...

If the data are pooled the 48 before scores had an average

If the data are pooled, the 48 "before" scores had an average of 7.48 and a standard deviation of 0.652. Assume that the "before" scores of people who have not seen any pictures has an average of 7.48 and a standard devi ...

Assignment -a dashboard-type report for the case study you

Assignment - A dashboard-type report for the case study. You may use Excel or Tableau. The data analysis should be improved from Assignment 1 based on the feedback received and further tools and techniques you learnt in ...

Problem arrival of vehicles at new jersey turnpike toll

Problem: Arrival of vehicles at New Jersey Turnpike toll booth on Saturdays at dawn is modeled as a Poisson Arrival process with a rate of 1.21 vehicles per minute. Let X be a random variable that records the number of a ...

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