This topic contains a solution. Click here to go to the answer

Author Question: Consider the following hypothesis test: Ho: = 10 Ha: 10 A sample of 81 provides a sample mean of ... (Read 71 times)

karen

  • Hero Member
  • *****
  • Posts: 537
Consider the following hypothesis test: Ho:  = 10 Ha:   10 A sample of 81 provides a sample mean of 9.5 and a sample standard deviation of 1.8.
 a. Determine the standard error of the mean.
  b. Compute the value of the test statistic.
  c. Determine the p-value; and at 95 confidence, test the above hypotheses.

Question 2

It is said that more males register to vote in a national election than females. A research organization selected a random sample of 300 registered voters and reported that 165 of the registered voters were male.
 a. Formulate the hypotheses for this problem.
  b. Compute the standard error of p.
  c. Compute the test statistic.
  d. Using the p-value approach, can you conclude that more males registered to vote than females? Let  = .05.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

peter

  • Sr. Member
  • ****
  • Posts: 330
Answer to Question 1

a. 0.2
b. t = -2.5
c. p-value is between .01 and .02 (two tail test); reject H0

Answer to Question 2

a. H0: P  0.5
Ha: P > 0.5
b. 0.0289
c. Z = 1.73
d. p-value = 0.0418 < .05; reject H0; yes, more males than females registered to vote.




karen

  • Member
  • Posts: 537
Reply 2 on: Jun 24, 2018
Excellent


bdobbins

  • Member
  • Posts: 326
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

For a complete list of videos, visit our video library