Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Hypothesis test for two means

The department is concerned that dual degree students may be receiving lower grades than regular students. Two independent random samples have been selected 150 observations from population 1 (dual degree students) and 150 from population 2 (MBA students). The sample means obtain are X1(bar) =79 and X2(bar) = 82. It is known from previous studies that the population variances are 4.5 and 5.0 correspondingly. Using a level of significance of .05, is there evidence that the dual degree students are receiving lower grades? Make clear.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M922781

Have any Question? 


Related Questions in Statistics and Probability

A communication system transmits bits over a channel such

A communication system transmits bits over a channel such that the probability of being received in error is P=0.02 . Bits are transmitted in blocks of length 1023 bits and an error correction scheme is used such that bi ...

Suppose x is a gaussian random variable with

Suppose X is a Gaussian random variable with mean  Suppose we form a new random variable according to Y= aX +b  for constants a and b . (a) Prove that Y is also Gaussian for any a ≠ 0 . (b) What values for the constants ...

Please write a quick response to this giving an example of

Please write a quick response to this giving an example of when binomial distribution would be used. Use 50 words or less please In reference to statistics, binomial distribution is defined as the frequency distribution ...

Write a matlab program to calculate the Write a MATLAB program to calculate the

Write a MATLAB program to calculate the probability   is a Gaussian random variable for an arbitrary x 1  and x 2 . Note you will have to specify the mean and variance of the Gaussian random variable.

The input to a linear filter is a random process with the

The input to a linear filter is a random process with the following autocorrelation function: The impulse response of the filter is of the same form and is Determine the autocorrelation function of the filter output for

Find the psd of the processexercise let wnnbspbe an iid

Find the PSD of the process. Exercise 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) Fin ...

Examine if the following is the legitimate probability

Examine if the following is the legitimate probability distribution. x f(x) -4 0.4 1 0.5 8 0.4 14 0.2 Legitimate probability distribution?

Let x t be a poisson counting process with arrival

Let X( t) be a Poisson counting process with arrival rate,λ We form two related counting processes,   by randomly splitting the Poisson process X( t) In random splitting, the the arrival associated with X( t) will become ...

A random variable has a cdf given bya find the mean of x b

A random variable has a CDF given by (a) Find the mean of X ; (b) Find the variance of X ; (c) Find the coefficient of skewness of X ; (d) Find the coefficient of kurtosis of X .

Q1 explain carefully the difference between an unbiased

Q1. Explain carefully the difference between an unbiased estimator and a consistent estimator. Does one imply the other? If so, show mathematically, and if not provide examples. Q2. In this question, we will use a data s ...

  • 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