Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep. This condition results in lack of sleep and extreme fatigue during waking hours. A current estimate is that 15 million out of the 312.7million Americans suffer from sleep apnea, or approximately 4.8%. A safety commission is concerned about the percentage of commercial truck drivers who suffer from sleep apnea. They do not have any reason to believe that it would be higher or lower than the population’s percentage. To test the claim that the percentage of commercial truck drivers who suffer from sleep apnea is not 4.8%, a simple random sample of 339 commercial truck drivers is examined by a medical expert, who concludes that 7 suffer from sleep apnea. Does this evidence support the claim that the percentage of commercial truck drivers who suffer from sleep apnea is not 4.8%? Use a 0.05 level of significance.   Step 2 of 3 :   Compute the value of the test statistic. Round your answer to two decimal places.

Q: A random sample of 250 physicians shows that there are 40 of them who make at least $400,000 a year.…

A: We have to find value of test statistics.

Q: in a recent poll 13% of all respondents said they are afraid of heights

A: a) Here, n = 3, p = 0.13, (1 - p) = 0.87 and x = 3As per binomial distribution formula P(X = x) =…

Q: Sloane conducted a study on years of completed education and income at age 40. She found that for…

A: In the given case, the researcher obtained the income of a sample of 40 years olds and their…

Q: It is known that males make up approximately 49% of the United States population. A researcher wants…

A: The claim is to test whether the proportion of males currently incarcerated in prisons within the…

Q: Popular wisdom is that eating presweetened cereal tends to increase the number of dental caries…

A: The question is about confidence intervalGiven :Randomly selected no. of sweetened cereal lover…

Q: Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep.…

A: Test statistic is the measure used to determine there exist significance between the sample and…

Q: .If you are at the 90th percentile in terms of GPA, then 90% of the sample has a lower GPA than you.…

A: Percentile : Percentile is the number such that certain percentage of data fall below that number.…

Q: Sleep apnea is a disorder in which you have one or more pauses in breathing or shallow breaths while…

A: a.In an observational study, researchers observe the effect without trying to make changes and no…

Q: Sleep apnea is a condition which the sufferers stop breathing momentarily while they are asleep.…

A:

Q: Tourism is extremely important to the economy of Florida. Hotel occupancy is an often-reported…

A: As per our guidelines we are supposed to answer only 3 sub-parts of any question.

Q: Researchers are interested in conducting a study to determine if men or women suffer more from…

A:

Q: Many people struggle with gambling addictions. Gambling addicts can jeopardize their relationships…

A: We have given that sample mean(x¯)=10 Standard deviation(σ)=1.6 Since we know population standard…

Q: A newspaper infographic titled "Have a Nice Trip" summarized data from a survey of 1,000 U.S. adults…

A: The objective of the question is to estimate the population proportion of U.S. adults who have…

Q: A researcher hypothesized that children's cholesterol levels may be affected by educating their…

A: Solution: Let X be the cholesterol level. From the given information, x-bar = 185, S=19.5 and n=40.

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A: We have to find conclusion from given solution.

Q: Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep.…

A: From the provided information, Sample size (n) = 339 From which 7 suffer from sleep apnea that is…

Q: The table below shows the number of deaths in the U.S. in a year due to a variety of causes. For…

A: We have to find we can support claim or not.

Q: Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep.…

A: Let p be the population proportion  p=5.9%=0.059  Let X be the number of people who suffer from…

Q: Doctors claim that sticking to a low-fat diet is not enough to lower cholesterol levels of…

A: In order to test the Doctor's claim which states that the average cholesterol levels remain the same…

Q: You’re a structural engineer working for a company that produces beams for use in residential home…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Doctors were trying to see how frequently patients survived who had a heart attack, had CPR…

A: Given that: Sample size, n=50 No. of successes, x=11 Population proportion, p=0.30

Q: Identify the type of observational study. A researcher plans to obtain data by interviewing…

A: The given study is the 'A researcher plans to obtain data by interviewing offspring of victims who…

Q: Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep.…

A: Claim : the percentage of commercial truck drivers who suffer from sleep apnea is not 4.1%

Q: Researchers wanted to study if wearing cotton clothes is related to depression. They surveyed a…

A: Given data                    Depressed     Not depressed     Total Cotton              A= 122…

Q: The American Academy of Pediatrics offers guidelines and recommendations for how much “screen time”…

A: Given data,No of parents n=200proportion of these parents who indicate they follow screen time…

Q: It is estimated that 15% of teens own iphone. In the MDM4U class there are 25 teens who own…

A:

Q: According to a study conducted by a statistical organization, the proportion of people who are…

A: The population is the data which includes all the observations that were used for the study. When…

Q: A Morning Consult/Politico poll of 1997 registered voters in July 2020 asked a standard polling…

A: The given margin of error is 0.019.

Q: The report “Undergraduate Students and Credit Cards in 2004: An Analysis of Usage Rates and Trends”…

A: The objective of the question is to determine whether the results of a survey can be generalized to…

Q: D. Construct a 95% confidence interval estimate of the proportion of adults believing that immediate…

A: It is given that  Favourable cases, X = 975 Sample size, n = 1762

Q: Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep.…

A:

Q: 5. According to a study released in 2006 by the Centers for Disease Control, 26.2% of all adults…

A: Note: Since you have posted multiple independent questions in the same request, we will solve the…

Q: When people are anxious, they tend to be depressed. When they are depressed, they tend to be…

A: Since you have posted a question with multiple subparts, we will solve first 3 sub-parts for you…

Q: (a) Use a .01 level of significance for any hypothesis tests. Data consistent with summary…

A: (a) The hypothesis is, Null hypothesis: H0:μmales-μfemales≤0 Alternative hypothesis:…

Q: The report “Undergraduate Students and Credit Cards in 2004: An Analysis of Usage Rates and Trends”…

A: The objective of the question is to determine whether it is reasonable to generalize the reported…

Q: Use the following information to answer the question. Studies show that since the pandemic started,…

A: Given R output  Studies show that since the pandemic started, screen time has increased…

Q: Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep.…

A: We have to find test statastics.

Q: Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep.…

A: Givenx=19n=308p^=19308=0.0617α=0.05

Q: 2.7 2.3 3.4 0.6 4.8 1.8 3.7 4.8 1.8 4.6 4.2 1.6 Determine the point estimate, x¯ and the sample…

A:

Q: . Look at the graph "Black small businesses hit twice as hard as white ones". Estimate the percent…

A: Based on the graph given we can estimate the percentage of white and black small business owners and…

Q: Need help with this problem.  It is believed that large doses of acetaminophen (the active…

A: From the given dataMargin of error =0,02Confidence interval =98%

Q: Each year, researchers at the U.S. Bureau of Labor Statistics (BLS) administer the American Time Use…

A: Given n=14