Common Sense Media surveyed 1000 teens and 1000 parents of teens to learn about how teens are using social networking sites such as Facebook and Instagram.  The two samples were independently selected.  When asked if they check their online social networking sites more than 10 times a day, 279 of the teens surveyed said yes.  When parents of teens were asked if their teen checked his or her site more than 10 times a day, 98 said yes.  Conduct a hypothesis test at the alpha = 0.01 level to test whether there is a difference in the proportion of teens and parents who check their online social networking sites.

Q: College administrators at the same institution are further concerned about the differences in binge…

A: According to the given information in this question There are more than three subparts according to…

Q: A study found that 80% of teenagers use social media on a regular basis. John wants to investigate…

A:

Q: Does heavy cell phone use affect brain activity? There is some concern about possible negative…

A: The hypothesis is an assumption that is being tested.

Q: A survey was conducted to investigate trends of romantic relationships and online behaviors. Out of…

A: given data IN THEIR 20S : n1 = 250x1  = 180IN THEIR 40S: n2  = 260x2 = 156α = 0.05claim : p1 ≠ p2

Q: A study is trying to determine if teens get more sleep per night than adults, on average. A research…

A: Given that    Sample sizes n1=15      , n2=20     Sample means X̄1=9.4      , X̄2=8.1      s1 =2.1…

Q: A psychologist at a private psychiatric hospital was asked to determine whether there was any clear…

A:

Q: Ride services are on the rise, such as Uber and Lyft. You wondered if the recent news reports of…

A: Given  19 males use ride services and 11 do not. 12 females use ride services and 18 do not.

Q: A newsletter publisher believes that over 33% of their readers own a laptop. For marketing purposes,…

A: Given that  Claim: Over 33% of their readers own a laptop.  Decision : Reject the null hypothesis.

Q: A professor at the University of Wisconsin is interested in studying the relationship between…

A: Given information:- Male Officers Female Officer n = 35 n = 20 M = 10.57 M = 8.34…

Q: A researcher has participants expecting to receive either painful or mild electrical shocks during a…

A: Usually in survival analysis studies we can use both parametric and non-parametric statistics. For…

Q: H0= H1= Determine the critical value(s) for this hypothesis test. Round the solution(s) to two…

A: Given : sample size, n = 145 sample mean, x̄ = 4.08 population standard…

Q: A survey was conducted to investigate trends of romantic relationships and online behaviors. Out of…

A: Suppose p1 and p2 are the proportion of people in their 20s who used social media to check on an ex…

Q: In a study, a large sample representative of the households in the US were asked about their smoking…

A: Research: Research is conducted to acquire knowledge and skills or to address the situation about…

Q: A hypothesis test is conducted to determine whether the percentage of US adults that think marijuana…

A: Given,n=400x=144p^=xnp^=144400=0.36

Q: The price drivers pay for gasoline often varies a great deal across regions throughout the United…

A: Given: Number of brands =3 Located in 11 metropolitan areas across upper Mid-west area. α=0.05 Set…

Q: Labor Day was created by the U.S. labor movement over 100 years ago. It was subsequently adopted by…

A: Given : sample size = n = 1000 x = 650 p^ = xn   = 6501000   = 0.65

Q: Browsing on the mobile device. A 2012 survey of 2292 American adults indicates that 20% of cell…

A:

Q: (c) Find or estimate the P-value of the sample test statistic. O P-value > 0.100 O 0.050 a, we fail…

A:

Q: A psychology professor was curious how psychology majors fared economically compared to business…

A: The summary of statistics is, M =43000, s =12000, n =22 The null and alternative hypothesis is, The…

Q: Does being part of a support group affect the ability of people to quit smoking? A county health…

A: (a) The 2 x 2 contingency table is given as follows:   Received nicotine patch +Met support group…

Q: A Gallup poll taken in May 2000 asked the question, “Which of the following do you think is the…

A: Given, Men: n1 = 493, p1 = 0.51 Women: n2 = 538, p2  = 0.38

Q: Are these data good evidence that on average the E. coli levels in these swimming areas were safe?…

A: Let μ be the population mean coliform bacteria. Given that, Sample size (n) = 24 Population mean (μ)…

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

A: Local: Sample size n1=100 Number of successes x1=65 National: Sample size n2=100 Number of successes…

Q: A researcher wanted to find out if a man's sense of humor had a significant effect on how he was…

A: Here we have two independent groups who are rating the person on a scale from 1 to 7. We are…

Q: A social psychologist wants to know if people judge a person's attractiveness differently if they…

A: Correct Option: C. independent samples t-test

Q: health provider saw that 48% of their members received their flu shot in recent years. The health…

A: Hypothesis testing plays a major role in research and development. To diagnose the underlying cause…

Q: elevision networks rely heavily on ratings of TV shows when deciding whether to renew a show for…

A: Given; H0: p=0.12Ha:p>0.12 To find which is true regarding type 1 error and type 2 error. Type I…

Q: ed on records in the past 5 academic years, the sophomore biology class has a mean score of 75. The…

A: In hypothesis testing, two hypotheses are formed, namely null and alternate hypotheses. The…

Q: A homeopathic drug company developed a new drug designed to prevent colds. The company claims there…

A: The random variable cold is normally distributed. There are two independent samples which hare women…

Q: In a neuroscience research lab, the researchers want to know the effects of long-term marijuana use…

A: In hypothesis testing, a pre-defined value of the population parameter is tested. To do this, a…

Q: Labor Day was created by the U.S. labor movement over 100 years ago. It was subsequently adopted by…

A: Given : The number of adults who said yes = 650

Q: Step 1. State hypotheses and alpha level.     Step 2. Locate critical region.     Step 3.…

A: The sample size for male officer is 35, sample mean is 10.57, and SS is 901.34. The sample size for…

Q: The national Center for Health Services found that 26% of men aged 20 years or older suffer from…

A: Given information- Sample size, n = 150

Q: 180 reported using social media to check on an ex (someone they used to date / be in a romantic…

A: Answer:- Given, Out of 250 adults in their 20s (20 to 29), 180 reported using social media to check…

Q: A consulting agency reports that only 30% of a company's website users can successfully use a…

A: Given that, n=150, p=0.36 The null and alternative hypothesis is, H0:P=0.30Ha:P≠0.30 Here we use…

Q: A new shampoo is being test-marketed. A large number of 16 ounce bottles were mailed out at random…

A:

Q: Researchers investigate how the presence of cell phones influence the quality of human interaction.…

A: Given information: Researchers are interested to study the effect of the cell phones quality of…