Calculate the pooled variance for the given data

Assignment Help Basic Statistics
Reference no: EM1321256

Two independent samples were taken, their values were:

31.3782

22.34339

22.00059

23.27456

19.58917

19.36148

18.69048

and

20.84991

14.47431

21.70867

20.95000

19.42273

22.40625

24.51507

21.81862

17.45048

19.09114

19.92904

27.34344

21.1876

 

The pooled variance of two samples is:

(1)14.388

(2)12.801

(3)12.68

(4)12.949

(5)14.285

Reference no: EM1321256

Questions Cloud

Test statistic value-testing equality of proportion variance : Find the test statistic value for testing the equality of proportion variances.
What are the equilibrium price and quantity : Draw a graph of the market for banana. What are the equilibrium price and quantity? Explain why. If the price of banana was $1.50 a box. What would be the situation in the banana market (shortage or surplus)? Explain why and how the price and quanti..
Solving probability problems based on normal distribution : Solving probability problems based on normal distribution
Testing the equality of population means : Find the test statistic value for testing the equality of population means of the two samples.
Calculate the pooled variance for the given data : The pooled variance of two samples is:
Interpreting a normal quantile plot : Interpreting a normal quantile plot
Confidence interval for the proportion of customers : In a mobile phone shop on a Sunday morning, out of n = 77 customers x = 19 buy a mobile phone. What is the 95% confidence interval for the proportion of customers buying a mobile phone?
Calculate the lower point of confidence interval for mean : For a sample of 11 independent observations from a normal distribution of unknown μ and unknown variance σ 2 , the sample mean is 74.6 and sample variance is 2.2. What is the lower point of the 90% confidence interval for μ?
Find the test statistic : Find the test statistic

Reviews

Write a Review

Basic Statistics Questions & Answers

  Construct a confidence interval for population proportion

Utilize the given degree of confidence also sample data to construct a confidence interval for population proportion.

  Mean square within treatments

To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments.

  Sample mean and sample standard deviation-random selection

Calculate the sample mean and sample standard deviation.

  Interpret the result and test to reject hypothesis for mean

Shall we reject the hypothesis that the population mean is 6.0? Interpret the result.

  Identifying the independent and dependent variables

Identify the independent and dependent variables, and Construct a nominal, ordinal, and interval level measure for each independent and dependent variable.

  Determining probability of examining sample mean weight

Determine the probability of examining a sample mean weight from any 20 women chosen from  this population that is less than S (your sample mean) by using population standard deviation?

  Compute spearman rank correlation

Two groups of students are asked to rank their preference for six types of soft drinks. The following table shows their rankings.

  Solving problem by statistical process control method

This table gives three measurements of 10 samples made in a production run. Use statistical process control method to solve problem.

  Descrete distribution introduction

What is the probability that the team wins tonight and that there will be a large crowd at tomorrow's game?

  Compute an analysis of variance

I have computed an analysis of variance for three groups with 10 observations per group. Evaluate the degrees of freedom for the F test

  History of being successful at getting a donor

She has a history of being successful at getting a donor on 55 percent of her calls. If June has a quota to get at least four donors each day.

  Computing standard deviation for drinking regular coffee

Suppose population standard deviation for those drinking regular coffee is 1.20 cups per day and 1.36 cups per day for those drinking decaffeinated coffee.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd