Difference between two population means

Assignment Help Basic Statistics
Reference no: EM1313066

Two types of flares are tested for their burning times (in minutes) and sample results are given below.

Brand X Brand Y

n = 35 n = 40

x = 19.4 x = 15.1

s = 1.4 s = 0.8

Refer to the sample data to test the claim that the two populations have unequal means. Use a 95% confidence level. State null and alternative hypothesis along with your final conclusion.

Reference no: EM1313066

Previous Q& A

  Key factors that influence respiratory rate

Key factors which influence respiratory rate and depth are such as talking or coughing, (such as, sometimes we try to breath at a several pace to relax)

  Show the process costing system

Which of the companies would most likely use a process costing system and  the delivery of products or services to customers is an example of which element in the value chain

  Describing the mitochondrial atp synthase

Yeast grows as a haploid cell. In the wild type cells in presence of O2, the pH of mitochondrial matrix is 8, however in cells along with this mutant S gene, the pH is 7. Explain all these results.

  Probability of playing card

What is the probability that all three students pick exactly the same card?

  Calculating the probability values

What is the probability that all tree students pick a different card?

  Determining the genotype of individual

The X gene encodes a transcription factor needed for the activation of C gene. Describe these results and signify the genotypes of all individuals described within this problem.

  How many tickets must be sold to reach break-even

Use the contribution margin ratio CVP formula to compute Peyton Travel's break-even sales in dollars. If the average sales price of a ticket is $660.00; how many tickets must be sold to reach break-even

  Method of acceptance sampling

Probability that the entire batch will be rejected?

  Evaluate peyton travel''s new break-even point

Use the contribution margin approach to evaluate Peyton Travel's new break-even point in tickets sold. How does this compare to your answer in part

  Operating margin for the year

Which of the following is a recognized way in which a healthcare organization should define its debt capacity and What effect will the reductions have on operating margin for the year


Write a Review


Similar Q& A

  Null-alternative hypotheses

State the null and alternative hypotheses you would use to test whether the year-end bonuses paid by Jones & Ryan were different from the population mean.

  Determining relative frequency and cumulative frequencies

Determine relative frequency of X=4? Generate the cumulative frequencies.

  World record time in the marathon

The world record time (in minutes) in the marathon is plotted versus the year in which the record was set for men and women separately. The plotting symbol o is used for men and x for women. The data include only records set between 1908 and 1988.

  Probability of smoking habits of group college students

Table shows the smoking habits of group college students. If student is selected at random, determine the probability of getting someone who is man or a woman.

  Linear programming models


  Decision analysis-maximax criterion

By using the maximax criterion, what decision should be made by the decision maker?

  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.

  Paired and unpaired samples t-test

Perform a proper analysis. Describe your null and alternative hypothesis, report the p-value. What is your conclusion?

  Concept of statistical signi cance

Concept of statistical signi cance

  Example on natural logarithm

where p is the binomial probability of returning a completed survey, and log is the natural logarithm. The multiple logistic regression output from fitting this model is given below.

  Evaluate the difference in the mean ratings

Evaluate the difference in the mean ratings and find the standard deviation of the difference in the ratings, what is the chance both children are boys?

  Selecting the appropriate sampling frame

he population consists of all 15 year olds living in the attendance district of a local high school. You plan to obtain a simple random sample of 200 such residents by using the roster of the high school as the sampling frame.

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