Ask Question, Ask an Expert

+61-413 786 465

info@mywordsolution.com

Ask Statistics and Probability Expert

We are interested in determining whether or not the variances of the sales at two music stores (A & B) are equal. A sample of 10 days of sales at store A has a standard deviation of 30, while a sample of 16 days of sales from store B has a standard deviation of 20.

1) What is the value of the Observed test statistic?

2) What are the results of the hypothesis test at a significance level of 0.05?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M9378945

Have any Question?


Related Questions in Statistics and Probability

Ann and bill play rock-paper-scissors each has a strategy

Ann and Bill play rock-paper-scissors. Each has a strategy of choosing uniformly at random out of rock, paper, and scissors every round (making independent selections each round). Each round can end in a win, loss, or a ...

Apopulation has a mean u81 and a standard deviation o28

A population has a mean u=81 and a standard deviation o=28. Find the mean and standard deviation of a sampling distribution of sample means with a sample size n=239. ux= ox=

54 of public high school students are provided a computer

54% of public high school students are provided a computer by their school district. 40 students are selected at random. The random variable represents the number of students who have been provided a computer by their sc ...

In an intro psychology class all 83 students have completed

In an Intro Psychology class, all 83 students have completed an aggression rating scale. The possible ratings range from 1-7 with low scores indicating low aggression. Results showed that the average rating was 4.23 with ...

Consider the following difference equation and initial

Consider the following difference equation and initial condition(s). In each case, verify that the expression given for an (i) is a solution of the equation (ii) satisfies the initial condition(s). (a) an = 2(1/3)n satis ...

Calculate the rate of return available to shareholders for

Calculate the rate of return available to shareholders for a company financing $1 million of assets with the following three arrangements: i. all equity ii. 50 percent equity and 50 percent debt at an interest rate of 12 ...

The companys cleaning service states that they spend more

The company's cleaning service states that they spend more than 46 minutes each time the cleaning service is there. The company times the length of 37 randomly selected cleaning visits and finds the average is 47.6 minut ...

You are considering investing in a mutual fund the fund is

You are considering investing in a mutual fund. The fund is expected to earn a return of 15 percent in the next year. If its annual return is normally distributed with a standard deviation of 6.10 percent, what return ca ...

The p-value for a two-sided test of the null hypothesis h0

The P-value for a two-sided test of the null hypothesis H0: μ = 50 is 0.035. Does the 95% confidence interval include the value 50? Why? Does the 99% confidence interval include the value 50? Why?

The mean of the annual return for common stocks from 1926

The mean of the annual return for common stocks from 1926 to 1992 was 16.5%, and the standard deviation of the annual return was 19%. In later parts of the question we will ask: a. What is the probability that the stock ...

  • 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

Why might a bank avoid the use of interest rate swaps even

Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate

Describe the difference between zero coupon bonds and

Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p

Compute the present value of an annuity of 880 per year

Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As

Compute the present value of an 1150 payment made in ten

Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int

Compute the present value of an annuity of 699 per year

Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As