![JuniperGalaxy](/avatars/20937.jpg)
JuniperGalaxy
23.07.2019 •
Physics
An observer is standing at a point balloon calculus find the rate at which
Solved
Show answers
More tips
- S Sport When will the Biathlon World Championships 2011 take place in Khanty-Mansiysk? Answers to frequently asked questions...
- O Other What is a Disk Emulsifier and How Does it Work?...
- F Family and Home What does a newborn need?...
- 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?...
Answers on questions: Physics
- P Physics Q1.Food irradiation is a process that exposes food to radiation. Irradiation can be used to kill the bacteria that cause food poisoning or to slow down the ripening of fresh...
- P Physics Need on this 3 paragraph essay! !...
- P Physics What’s a good hypothesis and and experiment for water?...
- M Mathematics Libons new car can travel 45 miles on 1 gallon of gasoline. At this rate, how far can the car travel on 7 gallons of gasoline. At this rate, how many gallons of gasoline does...
- E English Read this excerpt from News Articles about Bullying. “It actually changed (my) life,” said classmate McKenna Inglett, in an interview with WFTS reporter Laura Harris. “I have...
- H History Why was Rome s creation of a common currency important?...
- M Mathematics Happy Paws charges $19.00 plus $4.50 per hour to keep a dog during the day. Woof Watchers charges $11.00 plus $5.75 per hour. Complete the equation and solve it to find for...
- M Mathematics If snow falls at a rate of 5 inches every 3 hours, what is the unit rate?...
- M Mathematics I need help with this question (image)...
- H History WORTH 50!! How does Franklin anticipate the alliance with France will help the United States? A.France’s participation will persuade Britain to surrender. B.Britain’s forces...
Ответ:
Ответ:
H0 : p = 0.5 versus H1: P < 0.5
Test statistic = - 2.76
Pvalue = 0.0029
Step-by-step explanation:
The hypothesis :
We are to test if less Than half of the American population within the of 14 to 18 years usually use social media while watching TV :
Hence, population proportion, p = 0.5
H0: p = 0.5
H1: P < 0.5
Sample size, n = 760
Sample proportion, Phat = 45% = 0.45
The test statistic, Z :
Z = (Phat - P) / √[(P(1 - P)) /n]
Z = (0.45 - 0.5) / √[(0.5(1 - 0.5)) /760]
Z = - 0.05 / √0.0003289
Z = - 2.7568 ; Z = - 2.76 (2 decimal places)
The Pvalue :
Using technology :
Pvalue from Zscore calculator ; Pvalue = 0.0029
Decision region :
Reject H0 if Pvalue < α
α = 0.05
Since 0.0029 < 0.05 ; we reject the Null and conclude that less than half of American within age 14 to 18 years usually use social media while watching TV.