At alpha .05 is there a difference in variances?, Ask an Expert

Statistics

Q1) Sample of twenty five concession stand buys at the October 22 matinee of Bride of Chucky illustrated a mean purchase of $5.29 with the standard deviation of $3.02. For October 26 evening illustrating of same movie, for sample of 25 buys the mean was $5.12 with a standard deviation of $2.14. Means appear to be very close, but not variances. At α = .05, is there a difference in variances? Illustrate all steps clearly, including the illustration of the decision rule.

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9162641

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Your company is considering a new project that will require

Your Company is considering a new project that will require $18,000 of new equipment at the start of the project. The equipment will have a depreciable life of 5 years and will be depreciated to a book value of $3,000 us ...

Question 1 find the area between -88 standard deviations

Question 1: Find the area between .-88 standard deviations below the mean and 2.35 standard deviations above the mean. '88=.3106 and 2.3=.4906 Both figures are added .3106+.4906= .8012 which is 80.12% Question 2: The are ...

The sample distribution on individual iq scores raw scores

The sample distribution on individual IQ scores (raw scores) has a sample mean of 100 and a standard deviation of 16. What proportion of the sample mean will fall at or above a mean of 102.56? Round the answers to no mor ...

A survey of a group of college students was done to find

A survey of a group of college students was done to find out how students get to school for the school year. 15% of those surveyed were from out of state. Of those that were in-state, 56% used a car as their primary form ...

A stat 200 instructor wants to know if students tend to

A STAT 200 instructor wants to know if students tend to score differently on the lesson 4 and 5 quizzes. Data were collected from a representative sample of 60 students during the Summer 2018 semester. Data were paired b ...

Research scenario a social psychologist is interested in

Research Scenario: A social psychologist is interested in whether the number of days spent in a refugee camp predicts trauma levels in recently resettled refugees. He interviews 17 refugees to determine how many days the ...

Amy currently has 500 in an account with an annual rate of

Amy currently has $500 in an account with an annual rate of return of 4.3%. She wants to have $3000 for a trip to Florida when she graduates in 2 years. How much will she have to save each month to afford her trip?

1 you consider buying both stock a and stock b to make a

1.) You consider buying both Stock A and Stock B to make a portfolio to reduce some unsystematic risk. Both stocks will be weighted equally in the portfolio. Stock A has an expected return of 11% and a standard deviation ...

Most graduate schools of business require applicants for

Most graduate schools of business require applicants for admission to take the GMAT, the Graduate Management Admission Test. Scores on the GMAT are roughly normally distribute with a mean of 527 and a standard deviation ...

You work in the quality control office for a company that

You work in the quality control office for a company that manufactures fluorescent light bulbs. Your company offers a 4-year (1461 day) warranty on these bulbs. The average life span of your bulbs is 1600 days with a sta ...

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