One would expect a student to be able to guess the answers to 10 items on a 20-item true-false test
One would expect a student to be able to guess the answers to 10 items on a 20-item true-false test. The scores for 14 students...
Hypothesis Testing Problems
A manufacturer wants to know if the variance of their product is 84 if a sample of 28 had a variance of 79
A manufacturer wants to know if the variance of their product is 84 if a sample of 28 had a variance of 79. Test the
The director of manufacturing at a clothing factory needs to determine whether a new machine is producing a particular type of
The director of manufacturing at a clothing factory needs to determine whether a new machine is producing a particular type of cloth according to t
How many tissues should a package of tissues contain
How many tissues should a package of tissues contain? Researchers determined that 68 tissues is the avg. number of tissues used during a cold. Supp
You believe the mean annual kilowatt usage of U
You believe the mean annual kilowatt usage of U.S. residential customers is less than 10,800. You do some research and find that a random sample...
Students were paired by matching their IQs and grades in previous mathematics courses taken
Students were paired by matching their IQs and grades in previous mathematics courses taken. Group A attended lecture and
Certain lottery claims that 10% of tickets win some prize
Certain lottery claims that 10% of tickets win some prize. Sample of 50 tickets had 3 winners. At .01 level, test claim t
A sample of freshmen takes a reading comprehension test and their scores are summarized below
A sample of freshmen takes a reading comprehension test and their scores are summarized below. If the mean for the genera
Data were collected from the sale of 25 properties by a local real estate agent
Data were collected from the sale of 25 properties by a local real estate agent. The following printout concentrated on the land value variable fro
A local politician, running for reelection, claims that the mean prison time for car thieves is less than the required 5 years
A local politician, running for reelection, claims that the mean prison time for car thieves is less than the required 5 years. A sample of...