Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Hypothesis testing for difference between two means-unequal variance.

A study was conducted on the annual incomes of corporate trainers in the state of New York in metropolitan areas having a population less than 100,000 and in metropolitan areas having a population over 500,000.  Some sample statistics are:

 

Sample Statistic

Population less than 100K

Population more than 500K

Sample Size

45

60

Sample Mean

$31,290

$31,330

Sample SD

$1,060

$1,900

 

Test hypothesis that the annual incomes of corporate trainers in areas of more than 500,000 are significantly more than those in areas of less than 100,000.  Utilize the 5 percent level of risk.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M918189

Have any Question? 


Related Questions in Statistics and Probability

Sat verbal scores are normally distributed with a mean of

SAT verbal scores are normally distributed, with a mean of 500 and standard deviation of 100. You randomly select a test taker. What's the probability that s/he scored between 500 and 700?

Msa stat workshop assessment requirements1 what is the

MSA STAT Workshop Assessment REQUIREMENTS 1. What is the population Regression function? ("GNP"  is dependent, and "Invest," "CPI" and "Interest" are independent) 2. Is this regression function significant overall (state ...

The iq of a randomly chosen individual is modeled using a

The IQ of a randomly chosen individual is modeled using a Gaussian random variable. Given that 50% of the population have an IQ above 100 (and 50% have an IQ below 100) and that 50% of the population have an IQ in the ra ...

Following the lead of given example design an optimum 2-bit

Following the lead of given example, design an optimum 2-bit quantizer for a signal whose samples follow a triangular PDF, (a) Find the four quantization levels   and the three boundary points,  (b) Find the mean-squared ...

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.

The average number of cars per hour arriving at a toll

The average number of cars per hour arriving at a toll booth is 57 while the standard deviation is 15. (a) Use Markov's inequality to find an upper bound on the probability of having more than 200 cars arrive in an hour. ...

Supposenbspnbspis a circular gaussian random variable whose

Suppose   is a circular Gaussian random variable whose PDF is described by Equation, Find the characteristic function associated with this complex Gaussian random variable,    Do you get the same (or different) results a ...

A balanced coin is tossed nine times find the probabilities

A balanced coin is tossed nine times. Find the probabilities of each of the following events: (a) exactly 3 heads occurred; (b) at least 3 heads occurred; (c) at least 3 heads and at least 2 tails occurred.

Discuss the background material leading to the declaration

Discuss the background material leading to the Declaration of Independence. This material breaks down into two areas of ( 1) external and (2) internal factors. Discuss the debate and factors that led to the colonies to f ...

A communication system sends binary data 0 or 1 which is

A communication system sends binary data {0 or 1} which is then detected at the receiver. The receiver occasionally makes mistakes and sometimes a 0 is sent and is detected as a 1 or a 1 can be sent and detected as a 0. ...

  • 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