![laylay120](/avatars/16242.jpg)
laylay120
15.04.2020 •
Mathematics
A random sample of 100 people was taken. Eighty-five of the people in the sample favored Candidate A. At significance level 0.05, we are interested in performing a hypothesis test to determine whether or not the proportion of the population in favor of Candidate A is significantly more than 80%.The critical value is?
Solved
Show answers
More tips
- S Style and Beauty How to Braid Hair with a Plaiting Machine: Tips and Recommendations...
- B Business and Finance How to Create a Business Plan? Your Ultimate Guide...
- F Food and Cooking Deflope: What is it and how does it work?...
- F Food and Cooking Why Doesn t the Confirmation Link Come to Email?...
- F Food and Cooking How to Get Reconfirmation of Registration?...
- S Science and Technology Discovering the Anatomy of an LCD TV Screen...
- H Health and Medicine What You Need to Know About Nasal Congestion in Infants: Causes, Symptoms, and Treatment...
- A Auto and Moto What is the Average Lifespan of an Engine in a Car?...
- C Computers and Internet Make Money Online: Secrets and Essential Ways...
- A Auto and Moto How Can Parking Sensors Help Drivers?...
Answers on questions: Mathematics
- M Mathematics In traveling across flat land, you notice a mountain directly in front of you. Its angle of elevation (to the peak) is 5 degrees . After you drive 8 miles closer...
- M Mathematics June uses 12 eggs to make cupcakes. She uses 4 eggs for each batch of cupcakes. Which expression can be uses to find the number of batches she makes...
- M Mathematics The ratio of nickels to dimes in a jar is 4 to 5. If the jar has 27 coins of only dimes and nickels, how many nickels are in the jar? Fill in your answer using the...
- M Mathematics Help me pls pls pls pls...
- M Mathematics 3. What % of 100 is 13?...
- M Mathematics Please help me, will give brainliest...
- M Mathematics Han has a thin rectangular sheet of paper. Its area is 450 square inches. He folds it into thirds, and then he folds the resulting rectangle into thirds again. What...
- M Mathematics What is the value of x?A. 15B. 60C. 45D. 30...
- M Mathematics -4(6x + 3) = 12 + 12x Solve for X...
- M Mathematics a turtle can swim 9/5 ofa mile in 36 minutes. how many miles can the turtle swim in 2 hours? how do i find the answer?...
Ответ:
We conclude that the proportion of the population in favor of Candidate A is less than or equal to 80%.
Step-by-step explanation:
We are given that a random sample of 100 people was taken. Eighty-five of the people in the sample favored Candidate A.
We are interested in performing a hypothesis test to determine whether or not the proportion of the population in favor of Candidate A is significantly more than 80%.
Let p = proportion of the population in favor of Candidate A
SO, Null Hypothesis,
: p
80% {means that the proportion of the population in favor of Candidate A is less than or equal to 80%}
Alternate Hypothesis,
: p > 80% {means that the proportion of the population in favor of Candidate A is significantly more than 80%}
The test statistics that will be used here is One-sample z proportion statistics;
T.S. =
~ N(0,1)
where,
= sample proportion of people favored Candidate A =
= 85%
n = sample of people = 100
So, test statistics =![\frac{0.85-0.80}{{\sqrt{\frac{0.85(1-0.85)}{100} } } } }](/tpl/images/0603/2668/18797.png)
= 1.40
Now at 0.05 significance level, the z table gives critical value of 1.6449 for right-tailed test. Since our test statistics is less than the critical value of z so we have insufficient evidence to reject our null hypothesis as it will not fall in the rejection region.
Therefore, we conclude that the proportion of the population in favor of Candidate A is less than or equal to 80%.
Ответ:
We solve for half of one side
half-side^2 = 18.4^2 -17^2
half-side^2 = 338.56 -289
half-side^2 = 49.56
half-side = 7.0398863627
area of polygon = 17 * 7.0398863627 * 8 =
957.4245453298
(This matches the double-check below).
Double-Check
n = number of sides
polygon area = apothem^2 * n * tan (180/n)
polygon area = 17*17 * 8 * tan (22.5)
polygon area = 17*17 * 8 * 0.41421
polygon area = 957.65352
Source:
http://www.1728.org/polygon.htm