Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

A professor is giving a T/F test in your history class. Statistics show students who don't study for test but attend class have a 60% chance of getting the answers correct.  The test is 20 problems and student didn't study.  (Hint: Binomial Distribution)

a) What are the odds a student gets more than 14 problems correct?

b) What are the odds a student gets exactly 12 problems correct?

c) What are the odds a student gets an A (19 or 20 problems correct)?

d) What are the odds the student gets a D or E (less than 14 problems correct)?

e) If the probability of a student getting an answer correct on the same 20 problem test increases to 62%, what are the odds a student gets exactly 12 problems correct?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M918592

Have any Question? 


Related Questions in Statistics and Probability

Suppose the arrival of telephone calls at a switch can be

Suppose the arrival of telephone calls at a switch can be modeled with a Poisson PMF. That is, if is the number of calls that arrive in minutes, then Where λ is the average arrival rate in calls/minute. Suppose that the ...

Supposenbsp xknbspis a sequence of zero-mean gaussian

Suppose  X k  is a sequence of zero-mean Gaussian random variables with covariances described by   Form the sequence of sample means Note that in this case we are forming the sequence of sample means of dependent random ...

Application ofnbsptnbsptestsidentify a research question

Application of  t  Tests Identify a research question from your professional life or career specialization that can be addressed by an independent samples  t  test. Indicate why a  t  test would be the appropriate analys ...

A medical inspector wants to estimate the overall average

A medical inspector wants to estimate the overall average monthly occupancy rates of the cancer wards in 80 different hospitals that are evenly located in the northwestern, southeastern, central, and southern suburbs on ...

Curve fittingthe following data points were found

Curve fitting The following data points were found experimentally, x 1 2 3 4 5 6 7 7.5 8 9 10 y 1 4 8 12 16 20 22 25 28 33 45 personalise this data by adding one intermediate point, with a value of y that fits into the g ...

Consider a moment-generating function of the general formor

Consider a moment-generating function of the general form or constants a , b , and c . Find constraints that the constants a , b , and c must satisfy so that M X  (u ) is the MGF of a valid random variable.

Consider a non-linear device such that the output

Consider a non-linear device such that the output is   where the input  consists of a signal plus a noise component,    Determine the mean and autocorrelation function for  when the signal    and the noise   are both Gau ...

Regression analysis assignmentuse your data and excel

Regression Analysis Assignment Use your data and excel spreadsheet program to perform a multiple regression analysis for your variables. The analysis should include the following: 1. Provide a brief background of the sit ...

Find an expression for the mth moment of an erlang random

Find an expression for the m th moment of an Erlang random variable whose PDF is given by   for some positive integer   and positive n constant b.

Consider an n -letter source with probabilitiesnbspnbspthe

Consider an N -letter source with probabilities,    the source is given by    Prove that the discrete distribution that maximizes the entropy is a uniform distribution.

  • 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