Among 734 randomly selected Internet users, it was found that 360 of them use the internet for making travel plans. Among Internet users, less than 50% use it for making travel plans. Using the P-value method with 0.01 significance level, test the claim

Q: A driver's education course compared 1,500 students who had not taken the course with 1,850 students…

A:

Q: Suppose 247 subjects are treated with a drug that is used to treat pain and 55 of them developed…

A: Solution: Let X be the number of subjects developed nausea and n be the number of subjects are…

Q: Consider a drug testing company that provides a test for marijuana usage. Among 309 tested subjects,…

A: State the hypotheses. That is, there is no evidence to conclude that less than 10 percent of the…

Q: Closing prices of two stocks are recorded for 50 trading days. The sample standard deviation of…

A: It is given that the sample size is n=50. The sample standard deviation of stock X is sx=4.897. The…

Q: In a certain school district, it was observed that 28% of the students in the element schools were…

A: In the school district it has been observed that, 28% of the students in the element school were…

Q: An online poll asked: "Do you believe the Loch Ness monster exists?" Among 22,273 responses, 62%…

A: The population proportion is studied by taking samples from the population and comparing the sample…

Q: A graduate student believes that people consider faces with more contrast between eye color and skin…

A: Explanation for the first part: Given a null hypothesis H0, we either conclude that there is not…

Q: In a recent year, the SF Giants won 47 of 81 home games and they won 37 of 81 away games. Use a 0.05…

A: It is given that SF giants won 47 of 81 home games and they won 37 of the 81 away games. That is, n1…

Q: In a recent presidential election, 611 voters were surveyed and 305 of them said they voted for the…

A:

Q: University personnel are concerned about the sleeping habits of students and the negative impact on…

A: Given Information: Sample size (n) = 377 Out of which X = 209 students reported experiencing…

Q: A recent survey showed that from a sample of 500 packages delivered by a Postal Service,480 were…

A: Given that :  A recent survey showed that a sample of 500 packages delivered by a postal service,…

Q: The percentage of physicians who are women is 32.4%.  In a survey of physicians employed by a large…

A: This problem can be solved by using test of significance for single proportion. In usual notations,…

Q: Since instant replay was introduced in tennis, men challenged 3057 calls, and 572 were overturned.…

A: The objective is to test the claim that women have more success in challenging calls than men. Let…

Q: Since an instant replay system for tennis was introduced at a major​ tournament, men challenged 1394…

A: This is an example of a two-tailed test as the researcher is interested in whether the men and women…

Q: A large department store examined a sample of 18 credit card sales and recorded the amounts charged…

A: Solution: Given information: k= 3 groups  n= 18 total observation

Q: A random sample of 829 births included 430 boys. Use a 0.05 significance level to test the claim…

A: given data,n=829x=430α=0.05p^= xn=430829=0.5187claim:51.4% of newborn babies are boys.

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A: From the provided information, Sample size (n) = 54 Out of which 35 involved an intoxicated driver.…

Q: A random sample of 834 births included 433 boys. Use a 0.05 significance level to test the claim…

A:

Q: Groups of people were asked if they were supporting local businesses during the pandemic. Of a…

A: The proportion of women supporting businesses = 59/220 =0.27 =p1 The proportion of men supporting…

Q: campus newspaper editorial claims that at least 75 percent of the students favor traditional course…

A:

Q: Consider a drug testing company that provides a test for marijuana usage. Among 298 tested subjects,…

A: Given, The sample proportion is,

Q: In a clinical trial among 5838 patients treated with some drug, 158 developed an adverse reaction of…

A:

Q: In a Gallup poll of 514 HR professionals, 45.9% said that body piercings and tattoos were big…

A: given, sample size (n) = 514 sample proportion (p^) = 45.9%  =  0.459 true proportion (p) = 50%  =…

Q: In a survey, 716 out of 1132 randomly selected adults in the United States said that they use cell…

A:

Q: A survey of 1200 TV households showed that 53.5% of them had at least one stand-alone streaming…

A: Let p be the population proportion  p=majority=1/2=0.50=50%, n=1200, p^=sample…

Q: According to the Bureau of Transportation Statistics, on-time performance by airlines is described…

A: Given information: Action % of time Observed frequency(O) On Time 71 141 National Aviation…

Q: marketer belive that 92% of adult in germany own a cell phone . a cell phone manufacture believes…

A: Given: p0=0.92x=174n=200p⏜=174200p⏜=0.87α=0.05

Q: A premed student wants to test the claim that the mean body temperature is less than 98.6 as is…

A: The sample mean and standard deviation are,

Q: If a hypothesis is true and the difference between the control group and the experimental group is…

A: Based on the concept, If a hypothesis is true and the difference between the control group and the…

Q: According to a survey by the Consumer Reports National Research Center of 1003 adults, 542 adults…

A: To test the claim that more than 50% of the adults are annoyed by food that does not look or taste…

Q: A sample of 272 adults (A) tried the new multigrain cereal Wow! A total of 209 rated it as…

A: Given : n1 = 272 , x1 = 209 n2 = 114, x2 = 79  α = 0.1

Q: Duckhunting and populated areas faces opposition on the basis of safety and environmental issues. In…

A: It is given that the sample size is 750 local residents, among that 560 who strongly opposed to…

Q: Among 200 randomly selected Internet​ users, it was found that 89 of them use the Internet for…

A: We have given that  Sample size n= 200 Favorable cases x = 89 Sample proportion p^=x/n

Q: The US Department of Energy reported that 46% of homes were heated by natural gas. A random sample…

A:

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: Given Information: The number of people over the age of 55, n1=307 The number of dreams in white and…

Q: 12. Plane Seats In a 3M Privacy Filters poll, 806 adults were asked to identify their favorite seat…

A: Given information Hypothesized proportion p = 0.50 Hypotheses: The null hypothesis is: H0­ : p =…

Q: t hand or her left hand, and then she asked the therapists to identify the selected hand by placing…

A: Given data,

Q: Write appropriate hypotheses, find the p-value and explain your results.

A: For freshmen, sample size n1 = 200 and number of freshmen who agree with a plan to limit enrollment…

Q: An article reported that 73% of companies have Twitter accounts. An economist thinks the percentage…

A:

Q: Consider a drug that is used to help prevent blood clots in certain patients. In clinical trials,…

A: Given: The sample number of patients treated is n=6103. The number of patients who developed adverse…

Q: When she was 14 years of age, Emily Rosa did a science fair experiment in which she tested…

A: It is given that among 244 trials, the touch therapists were correct 113 times.

Q: Suppose the mean income of firms in the industry for a year is $25 million with a standard deviation…

A:

Q: which she tested professional touch therapists to see if they could sense her energy field. She…

A: Given  p=0.5  We want to find the hypothesis

Q: advertising tool, the company invites 100 people to view a 30-minute program that includes a…

A: Given that  P-value =0.0952 Level of significance =0.05

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.