jayjay5246
22.06.2019 •
Mathematics
Sate why the measure of angle d is 120 degrees
Solved
Show answers
More tips
- S Science and Technology How to Choose a Picture Frame: Tips and Recommendations...
- F Family and Home Choosing the Right Car Seat for Your Child: Tips and Recommendations...
- F Food and Cooking How to Get Reconfirmation of Registration?...
- C Computers and Internet How to Get Rid of Spam in ICQ?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
- H Health and Medicine How to Cure Adenoids?...
- H Health and Medicine Why Wearing a Back Brace Can Be Beneficial During Back Strain?...
- S Sport When and Where Will the 2014 World Cup be Held?...
Answers on questions: Mathematics
- M Mathematics When rosina babysits for 5 hours she charges $40 and when she babysits for 6 hours she charges $48. how much does rosina charge in one hour?...
- M Mathematics How does a bar diagram you understand what it means to divide fractions?...
- M Mathematics The distributive property loss of combined subtraction and multiplication for example 3 x (5-2) = (3x5) - (3x2) explain how you could use the distributive property and mental math...
- M Mathematics Write the value of the underlined digit 9.173 and the underlined number is 9...
- M Mathematics What is the average rate of change of d(t) between 2 seconds and 6 seconds, and what does it represent? 128 m/s; it represents the average speed of the object between 2 seconds...
- M Mathematics Which statement describes how the graph of the given polynomial would change if the term –3x6 is added? y = 2x6 + 9x5 – 7x3 – 1 both ends of the graph will approach negative infinity....
- M Mathematics Earn 800 a month. spend 10% of her monthly budget in clothes and food, how muchiha does she spend on clothes and food...
- M Mathematics Anne katz, the owner of katz sport shop, lends $8,000 to shelley slater to her open an art shop. shelley plans to repay anne at the end of eight years with interest compounded...
- M Mathematics Will give brainest what is the slope intercept equation of this line?...
- M Mathematics Janine opens a savings account with a deposit of $720. the account pays 3.4% interest, compounded daily. what is the first day s interest? round to the nearest cent....
Ответ:
The p-value of the test is 0.1469 > 0.05, which means that there is no reason to believe that the proportion of adults favoring capital punishment today has increased, using a 0.05 level of significance.
Step-by-step explanation:
Suppose that, in the past, 40% of all adults favored capital punishment. Test if the proportion has increased:
At the null hypothesis, we test if the proportion is still of 40%, that is:
At the alternative hypothesis, we test if the proportion has increased, that is, is greater than 40%, so:
The test statistic is:
In which X is the sample mean,
is the value tested at the null hypothesis, 
is the standard deviation and n is the size of the sample.
0.4 is tested at the null hypothesis:
This means that
Random sample of 15 adults, 8 favor capital punishment.
This means that
Value of the test statistic:
P-value of the test and decision:
The p-value of the test is the probability of finding a sample proportion of 0.5333 or more, which is 1 subtracted by the p-value of z = 1.05.
Looking at the z-table, z = 1.05 has a p-value of 0.8531.
1 - 0.8531 = 0.1469.
The p-value of the test is 0.1469 > 0.05, which means that there is no reason to believe that the proportion of adults favoring capital punishment today has increased, using a 0.05 level of significance.