Mean fuel expense of the three manufacturers

Reference no: EM1397993

Scenario: Surging Fuel Prices

Situation:

ABC Trucking Company purchased 15 trucks at the same time to start their business. 5 Trucks were purchased from Peterbilt, 5 from Freightliner, and 5 from Kenworth. All the trucks are used for long distance hauling. The cost of fuel for the first year is shown. Is there a significant difference in the mean fuel expense of the three manufacturers?

Fuel Expense, by Manufacturer

Peterbilt Freightliner Kenworth

$28,000.00 $27,000.00 $25,000.00

$30,000.00 $27,000.00 $28,750.00

$27,500.00 $29,000.00 $28,000.00

$28,000.00 $31,000.00 $26,750.00

$29,500.00 $28,750.00 $29,800.00

The 3 different manufacturers are called treatments.

There are two degrees of freedom in the numerator (3-1=2). There are 12 degrees of freedom in the denominator (15-3 = 12).

Determine the critical value of F found in Apendix G. The level of significance is 0.05.

I need help determining the following:

i) State the null and alternate hypothesis

ii) Find the grand mean

iii) Find the grand total within columns

iv) Find the grand total between columns

v) Find the Mean Square Within Columns

vi) Find the Mean Square Between Columns

Reference no: EM1397993

Questions Cloud

Simultaneous responses to two categorical questions : When studying the simultaneous responses to two categorical questions, we should set up a:

Anova and students t test for diet data : Student volunteers in a weight loss project were randomly assigned to one of three diets. After 2 months on the diets, subjects were weighed and weight loss was recorded for each person.

Information about two way anova in spss : Time to help a stranger was investigated by a group of undergraduate psychology majors as a part of their Introduction to Research Methods course.

Standard deviations below and above the mean : According to the empirical rule, if the data from a "bell-shaped" normal distribution ______ percent of the observation will be contained between 2 standard deviations below the mean and 2 standard deviations above the mean.

Mean fuel expense of the three manufacturers : ABC Trucking Company purchased 15 trucks at the same time to start their business. 5 Trucks were purchased from Peterbilt, 5 from Freightliner, and 5 from Kenworth.

Excessive regulation of workplace safety hurts productivity : Opponents of "Big Government" claim that excessive regulation of workplace safety hurts productivity and increases costs.

Perfectly symmmetrical distribution : In a perfectly symmmetrical distribution: a) the range equals the interquartile range b) the interquartile range equals the mean c) the median equals the mean d) the variance equals the standard deviation

Testing of homogeneity of variance : Using an alpha of .05, what can you conclude about homogeneity of variance from the output? Word process your responses on the SPSS output pages.

Evaluating undergraduate applicants : The ACT is an exam used by colleges and universities to evaluate undergraduate applicants. The test scores are normally distributed. In a recent year, the mean test score was 21.1 and the standard deviation was 5.0.

User Account

All Pages