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Give two sets of four numbers that have the same mean but different median.
Give two sets of four numbers that have the same median but different means.
Give two sets of four numbers that have the same mean but different standard deviation.
Give two sets of four numbers that have the same standard deviation but different mean.
What is the mean and standard deviation of the sampling distribution of x-bar assuming that mean =20 and standard deviation equals the square root of 20?
Give a 90% confidence interval for the mean "absolutely refractory period" for all rats of this strain when subjected to the same treatment.
question a statistics instructor is interested in the correlation pearson r between how many hours a student sleeps
The confidence interval for proportion of adults who approve of the candidate is ____
What is the probability that all 3 would iPods from best buy? Or at least one would have iPod from best buy?
Find the mean and standard deviation for the batting average for a player in the most recently completed MBL season. What batting average would separate the top 5% of all hitters from the rest?
What is the probability that none of three randomly chosen persons areallergic to this drug . what is the probability that at least one person is allergic to this drug.
However, 21% of the students neither go to all the lectures nor buys the recommended textbook. What is the probability that a randomly chosen student who buys the textbook attends every lecture?
What is the best estimate of the average tread life for the entire population of these tires?
If the population standard deviation is σ = 10, can you conclude that the treatment has a significant effect? Use a two-tailed with α = .05.
The sameple you found that 114 of those adults sampled over the age of 24 smoke. Develop a 95% condience interval for the current porportion of adults over the age of 24 who smoke.
Rresearch analyst in an environmentally-concerned consultancy group. Your team leader has given you a research task to investigate the empirical relationship between Australia's Gross Domestic Product
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