Reference no: EM13106540
As part of a study of corporate employees, the Director of Human Resources for PNC, Inc. wants to compare the distance traveled to work by employees at their office in downtown Cincinnati with the distance for those in downtown Pittsburgh. A sample of 35 Cincinnati employees showed they travel a mean of 370 miles per month, with a standard deviation of 30 miles per month. A sample of 40 Pittsburgh employees showed they travel a mean of 380 miles per month, with a standard deviation of 26 miles per month. At the .05 significance level, is there a difference in the mean number of miles traveled per month between Cincinnati and Pittsburgh employees?
Use the five-step hypothesis-testing procedure.
1. State the null hypothesis:
2. State the alternate hypothesis:
3. State the decision rule (I will reject the null hypothesis if the calculated value of the test statistic, z, is (greater than, or less than, or both)_______(then fill in the value)_______.
4. Compute the value of the test statistic (z=?)
5. What is your decision regarding the null hypothesis (accept or reject)?
What does this say about the distance traveled t work by employees in Cincinnati compared with Pittsburgh (same distance or not the same)?
|
Determining z-score and proportion
: Toby's trucking company determined that the distance traveled per truck per year is normally distrinuted, with a mean of 50.0 thousand miles and a standard deviation of 12.0 thousand miles.
|
|
In what direction does the normal force act
: A block with mass m = 4 kg is sitting on the ground and not moving. The acceleration due to gravity is g = 9.81 m/s2. Please answer the following questions.
|
|
Question on z-test
: A new company is manufacturing light bulbs. The CEO claims that the average light bulb lasts 260 days. A researcher selects 25 bulbs for testing. The sample bulbs last an average of 250 days with a standard deviation of 20 days.
|
|
What is the numerical value of the dragster final speed
: a) Write an expression for the magnitude of the force, F, that propels the dragster forward in terms of the variables provided. b) If the track has length L, select the correct symbolic equation for how fast Vf the dragster is traveling when it fi..
|
|
Five-step hypothesis z-test
: As part of a study of corporate employees, the Director of Human Resources for PNC, Inc. wants to compare the distance traveled to work by employees at their office in downtown Cincinnati with the distance for those in downtown Pittsburgh.
|
|
Perfect substitutes production
: Write down the equation that describes the firms optimal choice of capital and labor. Show that a combination of inputs such that K=2L is optimal
|
|
Determine herzberg-s motivation factors for general managers
: Determine Herzberg's motivation factors are Trust and Lichman emphasizing for general manages? Would it be possible for Finagle A bagel to apply concept of flextime to store employees?
|
|
Relationship in business organizational strategy and project
: Explain the relationship between a business's organizational strategy and its projects. Based on your budding understanding of project management, predict which elements of project management are most influenced by the business's organizational strat..
|
|
What was its horizontal speed at the top
: Angel Falls in southeastern Venezuela is the highest uninterrupted waterfall in the world, dropping 979 m (3212 ft). Assume that it takes 14 s for the water to fall from the lip of the falls to the river below. If the water lands 55 m from the bas..
|