Under normal circumstances without music the scores on the

Assignment Help Basic Statistics

Reference no: EM13610322

Numerous studies have demonstrated that listening to music while studying can improve memory (Hallam, Price, & Katsarou, 2002). To demonstrate this phenomenon, a researcher obtains a sample of college students and gives them a standardized memory test while they are listening to background music. Under normal circumstances (without music), the scores on the test form a normal-shaped distribution with a mean of u = 25 and a standard deviation of o = 6. The sample produces a mean score of M=28.

a. If the sample consists of n=4 students, is this result sufficient to conclude that the music had a significant effect on memory scores? Use a two-tailed test with alpha = .05 Be sure to show all formulas, include all steps and plug in the numbers (show all work). Explain the decision to reject or fail (significant or not significant effect).

b. If the sample consists of n=36 students, is this result sufficient to conclude that the music had a significant effect? Again, use a two-tailed test with alpha = .05 Be sure to show all formulas, include all steps and plug in the numbers (show all work). Explain the decision to reject or fail (significant or not significant effect).

c. If there is a difference in outcomes (overall significance), what can you conclude about the results of part a and b above?

Reference no: EM13610322

Questions Cloud

Electrons produced by a certain device are observed to : electrons produced by a certain device are observed to travel in a circular path with a radius of 2.0 cm when placed in

A researcher is evaluating the influence of a treatment : a researcher is evaluating the influence of a treatment using a sample selected from a normally distributed population

A company issued 92 10-shyyear bonds with a par value of : a company issued 9.2 10-shy?year bonds with a par value of 100000. interest is paid semiannually. the market interest

The bottom of the distillation column is essentially : an alcohol solution contains 6 by mass ethanol. this solution is fed to a distillation column at a rate of 1000 kgh.

Under normal circumstances without music the scores on the : numerous studies have demonstrated that listening to music while studying can improve memory hallam price amp katsarou

A company issued 9 10-shyyears bonds with a par value of : a company issued 9 10-shy?years bonds with a par value of 1000000 on september 1 year 1 when the market rate was 9. the

Find the net force on the 22 mc point charge assume the : three point charges are placed on the x-axis as follows 22 mc at x 0 30 mc at x 0.50 m and -14 mc at x 1.3 m.a find

Distances are in meters how much work is done in the time : a particle moves along the path defined by x 3t and y 5t2 where t is the time in seconds and distances are in meters.

Interest rate premiums a 5-year treasury bond has a 52 : interest rate premiums. a 5-year treasury bond has a 5.2 yield. a 10-year treasury bond yields 6.4 and a 10-year

User Account

All Pages