mp3 ownership- an mp3 manufacturer claims that 65% of teenagers 13 to 16 years old have their own mp3 players. a researcher wishes to test claim and selects a random sample of 80 teenagers. she finds that 57 have their own mp3 players. At a=0.05, should the claim be rejected ? use the P-value method.   PLEASE EXPLAIN STEP BY STEP

Q: It is estimated that 3% of adults age 18 to 29 who have high blood pressure. You wish to test this…

A: We assign Null Hypothesis (H0) and Alternative Hypothesis (H1) The test statistic,…

Q: Claim: Fewer than 93 ​% of adults have a cell phone. In a reputable poll of 1162   ​adults, 85 ​%…

A: Given information- Population proportion, p = 0.93 Sample size, n = 1162 Sample proportion is- We…

Q: ​Claim: Fewer than 94​% of adults have a cell phone. In a reputable poll of 1074 ​adults, 85​%…

A: We have to find test statistics....

Q: How many adults must be surveyed in order to be 95% confident that the sample percentage is in error…

A:

Q: Teachers' Salaries California and New York lead the list of average teachers' salaries. The…

A: Given :

Q: According to previous studies, 10% of the U.S. population is left-handed. Not knowing this, a high…

A: From the provided information,

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A:

Q: A researcher concluded that a patient was in the risk group of developing a rare disease based on…

A: Solution: Here, hypotheses for this test can be written as follows: H0: A patient was NOT in the…

Q: The sample mean is the point estimator of 18

A:

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A: The proportion of adults who would erase all of their personal information online if they could is…

Q: The manufacturer of a new racecar engine claims that the proportion of engine failures due to…

A: Given: Significance level = 0.05

Q: Close Confidants and Social Networking SitesA previous exercise introduced a study in which 2006…

A:

Q: Days before a presidential election, an article based on a nationwide random sample of registered…

A: Given Information:  Percentage of registered voters = 52% ± 3%

Q: Pages were randomly selected from one book each from authors A, B, and C. The accompanying table…

A: Given :

Q: How Many Household Cats Hunt Birds? “Domestic cats kill many more wild birds in the United States…

A:

Q: Skittles claims that 30% of their candies are purple, 30% are green, 20% are orange, 10% are blue…

A: Solution: The given table of data is

Q: According to a report on consumer fraud and identity theft, 26% of all complaints for a year were…

A: In this case, it is needed to check whether the data provide enough evidence to show that Missouri…

Q: ​Claim: Most adults would erase all of their personal information online if they could. A software…

A: Ho :   p =    0.5                  H1 :   p >   0.5     (Right tail test)…

Q: According to DATAUSA, the homeownership rate in Wilmington, DE is 60%. A random sample of 25…

A: Given data, n=25 p=60%=0.6 Standard error=?

Q: randomly selected adults showed that 62​% of them would erase all of their personal information…

A: Given data sample size, n =696 population proportion,p= 0.5

Q: Acme Toy Company prints baseball cards. The company claims that 30% of the cards are rookies, 60%…

A: Null hypothesis:  H0: The three proportions are same. Alternative hypothesis:  Ha: At least two…

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A: Given;-   Claim: Most adults would erase all of their personal information online n= 454 56% of them…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A:

Q: attached a picture! the 95% margin one!

A:

Q: A recent drug survey showed an increase in the use of drugs and alcohol among local high school…

A: Let p1 and p2 be the proportion of local and national seniors using drugs respectively. The…

Q: Hawaiian Airlines topped the list of the most punctual U.S. airlines for full-year 2014, according…

A: Provided information is, Hawaiian Airlines topped the list of the most punctual U.S. airlines for…

Q: ​Claim: Most adults would erase all of their personal information online if they could. A software…

A:

Q: on Administration reported that 51.7% of homes in the United States were heated by 8–44 natural…

A: The null and alternative hypotheses are: Ho: p = 0.517Ho:p=0.517 Ha: p =\not 0.517Ha:p≠​0.517 This…

Q: In a large city, 55% of people pass the drivers' road test. Suppose that every day, 200 people…

A: given data,55% of people pass the driver's road testp=0.55q=1-0.55=0.45n=200we have to find out the…

Q: In a simple random sample of 1200 young​ people, 86​% had earned a high school diploma. What is the…

A: The formula of the standard error of the estimate is, Where,   p denotes the population proportion…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.