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Question: Are the sample means for n = 5 and n = 10 "close" to the theoretical mean, μx? Explain why or why not. Which of the two distributions of sample means has the smaller standard deviation? Why? As n changed, why did the shape of the distribution of the data change? Use one to two complete sentences to explain what happened.
Adriana Corporation manufactures football equipment. In planning for next year, the managers want to understand the relation between activity and overhead costs.
Diastolic blood pressure are assumed to follow a normal distribution with a mean of 85 and a standard deviation of 12.
a political pollster randomly selects a sample of 100 voters each day for 8 successive days and asks how many will vote
assume that a random sample is used to estimate a population proportion p. find the margin of error e that corresponds
That contains 18 red, 18 black, and 2 green slots. A ball is rolled 25 times. Find the probability that the ball does not fall into any green slot?
the owner of a dry cleaning business in an effort to measure the quality of the services provided would like to study
Basic concepts. For each of the following, answer the question and give a short explanation of your reasoning.
Consult the following data on a sports car 0 to 60 times, in seconds.- Find the mean and the median. Compare the two. Also construct a box plot. Interpret your findings.
Plant Genetics In the Exercise, a cross between two peony plants-one with red petals and one with streaky petals-produced offspring plants with red petals 75% of the time. What is the exact probability distribution for x
Brain and body. The correlation between body weight and brain weight is r = 0.86. How well does body weight explain brain weight for mammals?
The IQ of a randomly chosen individual is modeled using a Gaussian random variable.- what percentage of the population have an IQ of at least 140 and thereby are considered "genius?"
We are interested in finding the 95% confidence interval for the percent of all black adults who would welcome awhite person into their families. Define the random variables X and P′, in words.
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