A professor is studying the performance of various student, Ask an Expert

Statistics

A professor is studying the performance of various student groups in his class. Let the random variable X represent a students final score in the class and define the following conditioning events

F = {student is a freshman}
So = {student is a sophomore}
J = {student is a junior}
Se = {student is a senior}
M = {student is a male}
F = {student is a female}

(a) Suppose the average score among males is E[X|M]= 73.2 and the average score among females is E[X|F] = 75.8 . If the overall class average score is E [X| F] = 74.6 , what percentage of the class is female?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91970971

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Two candidates face each other in an election the

Two candidates face each other in an election. The Democratic candidate is supported by 58% of the population, and the Republican candidate is supported by 42%. In other words, if you randomly chose a voter and asked the ...

A study of cancer was conducted among 10000 men in the

A study of cancer was conducted among 10,000 men in the United States who were 40-75 years of age. Every two years questionnaires are sent to these individuals, and newly diagnosed cases of various cancers were reported. ...

The table to the right shows the results of a survey in

The table to the right shows the results of a survey in which 2575 adults from Country? A, 1126 adults from Country? B, and 1072 adults from Country C were asked if human activity contributes to global warming. Complete ...

What are the differences between the federal deficit and

What are the differences between the Federal deficit and Federal Debt? How does a government budget deficit affect the economy, specifically the unemployment rate and job creation? Identify two periods in recent history ...

I a survey of 400 adults that say traffic is a problem

In a survey of 400 adults that say traffic is a problem: East reported 36% is a problem, South 33% problem, Midwest 26% problem and West 55% problem. (a) The 95% confidence interval for the proportion from the West say t ...

1 to investigate the ecological impact of parasite

1. To investigate the ecological impact of parasite infections, scientists measured the distance that infected western fence lizards, Scelopons occidentalis , ran in two minutes against a control group of uninfected liz ...

A survey reported that 80 of college students had access to

A survey reported that 80% of college students had access to a tablet. In a sample of 200 college students, find the probability that more than 170 had access to a tablet.

Sixty percent of adults have looked at their credit score

Sixty percent of adults have looked at their credit score in the past six months. If you select 31 customers, what is the probability that at least 25 of them have looked at their score in the past six months?

A travel weekly international transport association survey

A Travel Weekly International Transport Association survey asked business travelers about the purpose for their most recent business trip. 19% responded that it was for an internal company visit. Suppose 950 business tra ...

An electronics store receives a shipment of 37 graphing

An electronics store receives a shipment of 37 graphing calculators, including 5 that are defective. Eight calculators are chosen at random to be sent to a local high school. How many selections contain 3 defective?

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