Statistics question and answers for September 14, 2023
- Q The Nurses Health Study has been collecting health and behavioral data every two years since 1976 using the same very large representative sample of female registered nurses in the United...
- Q The EPA has clear data collection protocols for evaluating the safety of drinking water To assess whether and how deviations from that protocol may affect data the EPA selected a...
- Q A study assessed the effects of playing a computer game solitaire during lunch on snack behavior A sample of 44 healthy adults was randomly assigned to eat lunch either with...
- Q Researchers studied the 2010 epidemic of pertussis in California They selected a random sample of 682 medical records of California children ages 4 to 10 who had been diagnosed with...
- Q The European Prospective Investigation into Cancer and Nutrition EPIC study asked 347 237 adults to keep dietary and lifestyle diaries for about 12 years A total of 3 759 cases...
- Q omly assigned to eat lunch either with computer game distraction or without distraction All ticipants ate the same breakfast and lunch rty minutes after lunch participants were offered cookies as...
- Q Question 2 To learn about the target population anecdot volunteer data are fundamentally biased data processes because O they lack detail O their data isn t recorded carefully enough the...
- Q Question 9 What is the main reason that it is easie causation from an experimental study observational study O A randomized experiment can compare l O Observational studies don t...
- Q the quiz Question 10 The EPA has clear data collection p safety of drinking water To assess from that protocol may affect data sample of 32 homes in Chicago an...
- Q Question 4 Surveys of U S households do not includ institutions rather than at home If the su represent the American population this O wording effect O lack of control...
- Q Question 8 What is the fundamental difference xperiment and a case control study Case control studies are a type of ma O They are the same type of study but...
- Q Question 6 In an observational study O the individuals are blinded to the O the explanatory variables are imp random
- Q Question 7 In a double blind expe O neither the participar the treatments until t the experimenters do
- Q Question 5 What is the fundamental difference between a human beings that may suffer from nonrespon a volunteer sample O Nonresponse can be really substantial but volunt not typically problematic...
- Q With a simple random sample nobody can game the system to purposefully amplify their answers over that of others because the individuals are not paid O the individuals are all...
- Q Dan works for NASA designing planetary rovers For his current project he has to design a rover capable of withstanding the harsh climate on the surface of Venus As part...
- Q Seventy million pounds of trout are grown in the U S every year Farm raised trout contain an average mean of 32 grams of fat per pound with a standard...
- Q units Suppose that the creatine kinase levels among healthy males are normally distributed with a standard deviation of 23 L the healthy males have a creatine kinase level above 150...
- Q Suppose that the quarterly sales levels among health care information systems companies are approximately normally distributed with a mean of 9 million dollars and a standard deviation of 1 2...
- Q Below is a graph of a normal distribution with mean 5 and standard deviation o 3 The shaded region represents the probability of obtaining a value this distribution that is...
- Q The Florida Department of Transportation FDOT would like to estimate the average speed of vehicles on 1 95 The mean speed in miles per hour of a random sample of...
- Q The computer science department is making a new recruitment poster for computer science majors and would like to include information about the average salary of a software developer on the...
- Q A marine biologist would like to estimate the mean lifespan of all Florida manatees The mean lifespan of a random sample of 36 Florida manatees was found to be 55...
- Q A professor would like to use a 99 confidence interval to estimate the mean amount of time IRSC students spend studying each week The professor knows that distribution of time...
- Q A campaign staffer would like to estimate the proportion of likely voters who will vote for a particular candidate in the upcoming election To help with this estimate the staffer...
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