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Question: In a CNN/Time poll conducted December 17-18, 1998, a sample of n = 1031 adults in the United States was asked, "Do you think the police should or should not be allowed to collect DNA information from suspected criminals, similar to how they take fingerprints?" Of those sampled, 66% answered "should" (https://www.pollingreport.com/crime.htm).
a. Calculate the conservative margin of error for the survey, as a percentage.
b. Compute an approximate 95% confidence interval for the percentage of all American adults who think police should be allowed to collect DNA information from suspected criminals.
Using the 1% significance level, can you conclude that persons with a business degree are better salespersons than those who have a degree in another area?
Two chi-square distributions were plotted on the same chart. One distribution was for 3 degrees of freedom and the other was for 12 degrees of freedom. Which distribution would tend to approach a normal distribution?
Find out the probability that temperature of oven will range from 460 to 470 F?
How many levels of task difficulty were studied?- How many levels of effort were studied?- Are there any significant task difficulty main effects?
Calculate the mean and standard deviation of the following data sets, then produce a five number summary and box plot of data.
a recent report indicated an average family of four 2 parents and 2 children under the age of 16 spends 500 per month
The producers of a new toothpaste claim that it prevents more cavities than other brands of toothpaste. A random sample of 60 people used the new toothpaste for 6 months. The mean number of cavities at their next checkup is 1.5. In general ..
The amount of money spent by a customer is uniformly distributed over (0,100). Find the mean and variance of the amount of money that the store takes on a given day.
A student heard that the average household watches 26.4 hours of t.v. per week, with a stand.dev. of 2.3 hours. He decided to run his own experiment and found that the average for the 58 people he surveyed was 27 hours. a) state H0 and H1 b) calculat..
Suppose that the time between two consecutive events for the renewal process {N(t), t ≥ 0} is equal to 1 with probability 1/2 and equal to 2 with probability 1/2.
The response on a scale from 1 to 10 to the question: "Considering all the business you do with Bank of America, what is your overall satisfaction with Bank of America?
The Third National Health and Nutrition Examination Survey (NHANES III, 1988-1994) was conducted by the National Center for Health Statistics, Centers for Disease Control and Prevention.
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