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A team of psychologists studying narcolepsy (a sleep disorder characterized by sudden nodding off during the day) decided to follow 20 narcoleptic volunteers throughout the course of one day and record how many times they each fell asleep. The data they collected have been arranged in the following simple frequency distribution:
N = 20
Find (a) the mode, (b) the median, and (c) the mean.
Find the minimum sample size needed, using a prior study that found that 19% of computers needed repairs or had problems by the time the product was three years old.
a consumer testing agency obtains 4 cars randomly from each of the folliwng three makers 1 2 3. we wish to compare
His sample size was 50,000. His method worked better than the Digest"s method. He predicted the correct winner, but was still off by 6 percentage points. How did he predict the Digest prediction so well?
1. there are two basic forms of sleep slow wave sleep sws and rapid eye movement rem sleep. infants spend about 50 of
Informed Consent would be used in qualitative and quantitative research for data collection, and how each may impact it from a qualitative and quantitative standpoint
The population of incomes in a particular community is thought to be highly right-skewed with a mean equal to $36,789 and a standard deviation equal to $2,490.
leroy a starting player for a major college basketball team made only 38.4 of his free throws last season. during the
a zoo has offers to look over cost of a new lion den. the actual cost y at 200000 is predicted by the pdffx x for 0
First step of analytical hierarchy process doesn't include?
a) Explain why it would be hard to take a Simple Random Sample? b) Describe how to take a cluster sample of chocolate chip cookies.
Quality Control A quality inspector checked for imperfections in rolls of fabric for one week. The random variable x represents the number of imperfections found.
Which of the following models are appropriate to forecast a time series whose amplitude increases over time?
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