![mimithurmond03](/avatars/23104.jpg)
mimithurmond03
03.01.2020 •
Mathematics
Exhibit 11-10 n = 81 s2 = 625 h0: ïƒ2 = 500 ha: ïƒ2 ≠500 the test statistic for this problem equals
a. 101.25
b. 64
c. 100
d. 101.88
Solved
Show answers
More tips
- C Computers and Internet Е-head: How it Simplifies Life for Users?...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
- H Health and Medicine Kinesiology: What is it and How Does it Work?...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
Answers on questions: Mathematics
- M Mathematics What is 4.438 rounded to the nearest tenth?...
- M Mathematics A rectangular garden measures 22ft by 27ft. Surrounding (and bordering) the garden is a path 3ft wide. Find the area of this path. Be sure to include the correct unit...
- H Health Mrs.Leonard calls the Office because her 3 year old child has been stung. She thinks it was a wasp, but isn’t sure.. She says he is having trouble breathing, is very...
- B Business Jenelle is Ruby s supervisor Ruby often knows things Jenelle s other subordinates don t, and she gets the lion s share of special, more autonomous duties. According...
- M Mathematics Is any of my friends on brainy?...
- B Biology When a neurotransmitter opens a chemically gated ion channel that allows sodium to enter the postsynaptic cell, the result is an a EPSP. b IPSP....
- S Social Studies When 7 year old Philip was caught pocketing a candy bar that he had not paid for, he felt ashamed and guilty. Using Freud s terminology, the sense of shame and guilt...
Ответ:
c. 100
Step-by-step explanation:
Notation and previous concepts
A chi-square test is "used to test if the variance of a population is equal to a specified value. This test can be either a two-sided test or a one-sided test. The two-sided version tests against the alternative that the true variance is either less than or greater than the specified value"
Null and alternative hypothesis
On this case we want to check if the population variance specification is violated, so the system of hypothesis would be:
Null Hypothesis:![\sigma^2 = 500](/tpl/images/0440/5328/2082f.png)
Alternative hypothesis:![\sigma^2 \neq 500](/tpl/images/0440/5328/e6bf2.png)
Calculate the statistic
For this test we can use the following statistic:
And this statistic is distributed chi square with n-1 degrees of freedom. We have eveything to replace.
c. 100
Calculate the p value
In order to calculate the p value we need to have in count the degrees of freedom , on this case 80. And since is a right tailed test the p value would be given by:
In order to find the p value we can use the following code in excel:
"=2*(1-CHISQ.DIST(100,80,TRUE))"
Ответ:
The ladder leaning against the wall forms a right angled triangle with the gound and the wall. So we can use the formula:
a² + b² = c²
The ladder is the hypotenuse c²
The vertical leg is b²
The base or horizontal leg is a²
We need to find the length of the base a², so:
a² = c² - b²
a² = 5² - 4²
a² = 25 - 16
a² = 9
a = √9
a = 3
Therefore the bottom of the ladder must be 3 feet from the wall.