This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Excel's _____ function can be used to compute the variance of a discrete random variable. a. ... (Read 115 times)

meagbuch

  • Hero Member
  • *****
  • Posts: 568
on: Jun 24, 2018
Excel's _____ function can be used to compute the variance of a discrete random variable.
 a. SUMPRODUCT
  b. AVERAGE
  c. MEDIAN
  d. VAR

Question 2

A student believes that the average grade on the statistics final examination was 87 . A sample of 36 past final examinations was taken. The average grade in the sample was 83.96 with a standard deviation of 12.
 a. State the null and alternative hypotheses.
  b. Using the critical value approach, test the hypotheses at the 5 level of significance.
  c. Using the p-value approach, test the hypotheses at the 5 level of significance.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ntsoane kedibone

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jun 24, 2018
Answer to Question 1

a

Answer to Question 2

a. H0:  = 87
Ha:   87
b. test statistic t = -1.52, critical t = 2.03; do not reject H0
c. p-value is between .1 and .2; therefore, do not reject H0


meagbuch

  • Member
  • Posts: 568
Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

bassamabas

  • Member
  • Posts: 294
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

How to combine and sketch transformations of a sinusoidal function (Question 2) (y=a*sin⁡b(x−c)+d) How to combine and sketch transformations of a sinusoidal function (Question 2) (y=a*sin⁡b(x−c)+d)
Testing motor function of cranial nerve VII - Smile Testing motor function of cranial nerve VII - Smile
Write equation for each function Write equation for each function
Determine if each function is continuous, If the function is not continuous, find the x-axis Determine if each function is continuous, If the function is not continuous, find the x-axis
Chloroplast structure and function Chloroplast structure and function
Random X inactivation in female placental mammals Random X inactivation in female placental mammals
Video: Pressure Flow Model Animation

For a complete list of videos, visit our video library