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The reading speed of second grade students in a large city is approximately normal, with a mean of 90 words per minute (wpm) and a
The reading speed of second grade students in a large city is approximately normal, with a mean of 90 words per minute (wpm) and a standard deviation of 10 wpm. (f) There is a 5% chance that the mean reading speed of a random sample of 23 second grade students will exceed what value? There is a 5% chance that the mean reading speed of a random sample of 23 second grade students will exceed wpm. (Round to two decimal places as needed.) Suppose Jack and Diane are each attempting to use a simulation to describe the sampling distribution from a population that is skewed left with mean 60 and standard deviation 15. Jack obtains 1000 random samples of size n =4 from the population, finds the mean of the means, and determines the standard deviation of the means. Diane does the same simulation, but obtains 1000 random samples of size n =35 from the population. Complete parts (a) through (c). (c) What do you expect the standard deviation of Jack's distribution to be? What do you expect the standard deviation of Diane's distribution to be? Jack's distribution is expected to have a standard deviation of |:| Diane's distribution is expected to have a standard deviation of |:| (Type integers or decimals rounded to two decimal places as needed.)
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