Purchase Solution

test the hypothesis of no difference betn population means

Not what you're looking for?

Ask Custom Question

SPSS computation and interpretation (T-Test)

Rental card gasoline prices per gallon were sampled at eight major airports. Data for Hertz and National car rental companies follow:

Airport Hertz National

Boston Logan 1.55 1.56
Chicago O'Hare 1.62 1.59
Los Angeles 1.72 1.78
Miami 1.65 1.49
New York (JFK) 1.72 1.51
New York (LaGuardia) 1.67 1.50
Orange County, CA 1.68 1.77
Washington (Dulles) 1.52 1.41

a. Use α = .05 to test the hypothesis of no difference between the population mean prices per gallon for the two companies.
b. Develop a 90% confidence interval estimate of the difference between the two population means (specify the null hypothesis and alternative hypothesis)
c. Develop a bar chart for these data

Attachments
Purchase this Solution
Solution Summary

This posting contans solution to following problem on testing the hypothesis of no difference between the population mean prices per gallon

Purchase this Solution
Free BrainMass Quizzes
Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

View More Free Quizzes
Related BrainMass Solutions

  • Test of hypothesis for difference between means

    167537 Test of hypothesis for difference between means: Prepare answers for the following Exercises and show all of your work in an Excel spreadsheet. A sample of 40 observations is selected from one population.

  • Z score and T test

    Sample Size 60 Sample Mean 120 Population Standard Deviation 30 Intermediate Calculations Difference in Sample Means -30 Standard Error of the Difference in Means 4.830459 Z-Test Statistic -6.21059 Two-Tailed Test Lower Critical Value

  • Explanation of the five-step hypothesis testing model

    For the null hypothesis of no difference between two population means (H0: µ1 = µ2), an alternative hypothesis can be that these population means are not equal (Ha: µ1 ≠ µ2).

  • Hypothesis Testing for AIU Responses to Job Satisfaction Survey Variables

    To test for difference in the intrinsic satisfaction level of the workers when grouped as to position using t-test of difference between means, the following were the results: a) Test statistic used is t-test of difference between means b) α = .05

  • Independent sample t test

    Sample Mean 185 Population Standard Deviation estimate 94.86833 Intermediate Calculations Difference in Sample Means 75 Standard Error of the Difference in Means 14.78416 Z-Test Statistic 5.072997 Two-Tailed Test Lower Critical Value

  • Hypothesis Testing: Difference Between Two Means

    416926 Hypothesis Testing: Difference Between Two Means Please help with the following problem. For the paired data: Perform a hypothesis test for the difference of two means.

  • Experimental Design and Analysis

    The hallmark of hypothesis testing is that each test is based on the testing of the null hypothesis. This is the hypothesis of no difference at all - between the sample and other samples, or between the sample and the population.

  • Multiple choice questions on Test of hypothesis

    What it should have been Two tailed test for difference between means (small sample size) Null Hypothesis: Ho: μ1=μ2 There is no difference between the means;

  • Hypothesis test for amounts paid into private pension funds

    Deviation 1100 Population 2 Sample Sample Size 76 Sample Mean 5727 Population Standard Deviation 1700 Intermediate Calculations Difference in Sample Means -575 Standard Error of the Difference in Means 227.8911 Z-Test Statistic -2.52313

  • T test for comparing IQ of males and females

    169.0716 Difference in Sample Means -2.49 t Test Statistic -0.86968 Two-Tail Test Lower Critical Value -1.98793 Upper Critical Value 1.987934 p-Value 0.386895 Do not reject the null hypothesis Conclusion: Fails to reject the null hypothesis

View More Related Solutions