Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

The mean serum cholesterol of 25 men ages 65-74 is 231, with the standard deviation of 50. For 25 women of same age, the mean serum cholesterol level is 255 with standard deviation of 49. Are the average serum cholesterol levels statistically different between men and women?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M923256

Have any Question? 


Related Questions in Statistics and Probability

Wells fargo banks call center has representatives that

Wells Fargo Bank's call center has representatives that speak both English and Spanish. A random sample of 11 calls to English-speaking service representatives and a random sample of 14 calls to Spanish-speaking service ...

Suppose a process can be considered to be in one of two

Suppose a process can be considered to be in one of two states (let's call them state A and state B), but the next state of the process depends not only on the current state but also on the previous state as well. We can ...

In a certain population 4 of people are color blind a

In a certain population, 4% of people are color blind. A subset is to be randomlychosen. How large must the subset be if the probability of its containing at least one colorblind person is at least 95%? (Consider the pop ...

Letnbsptheta be a phase angle which is uniformly

Let θ be a phase angle which is uniformly distributed over   Suppose we form two new random variables according to  for some constant . (a) For what values of the constant are the two random variables x and y orthogonal? ...

Two independent samples of a random variablenbsp x are

Two independent samples of a random variable  X are taken. Determine the expected value and variance of the sample mean estimate of  µ X  if the PDF is exponential,

Let wnnbspbe an iid sequence of zero-mean gaussian random

Let W n  be an IID sequence of zero-mean Gaussian random variables with variance    Define a discrete-time random process   where   is a constant. (a) Find the mean function  (b) Find the autocorrelation function,

It is estimated thatnbsp88 of senior citizens suffer from

It is estimated that 88% of senior citizens suffer from sleep disorders and 7% suffer from anxiety. Moreover, 6% of senior citizens suffer from both sleep disorders and anxiety. (a) Find the probability that a senior cit ...

1an understanding of statistics is necessary in any job

1) An understanding of statistics is necessary in any job. The use of statistics can help provide answers to many questions. Please, post a question you think that statistics may help you answer and explain why statistic ...

The probability that a pharmaceutical firm will

The probability that a pharmaceutical firm will successfully develop a new drug that will return $750 million dollars is 0.14. If the research is unsuccessful, the company incurs a cost of $100 million dollars. What is t ...

A political polling firm is conducting a poll in order to

A political polling firm is conducting a poll in order to determine which candidate is likely to win an upcoming election. The polling firm interviews likely voters and asks each whether or not they will vote for the rep ...

  • 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

A cola-dispensing machine is set to dispense 9 ounces of

A cola-dispensing machine is set to dispense 9 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manuf

What is marketingbullwhat is marketing think back to your

What is Marketing? • "What is marketing"? Think back to your impressions before you started this class versus how you

Question -your client david smith runs a small it

QUESTION - Your client, David Smith runs a small IT consulting business specialising in computer software and techno

Inspection of a random sample of 22 aircraft showed that 15

Inspection of a random sample of 22 aircraft showed that 15 needed repairs to fix a wiring problem that might compromise

Effective hrmquestionhow can an effective hrm system help

Effective HRM Question How can an effective HRM system help facilitate the achievement of an organization's strate