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Question: The median income for a random sample of households in a school district was found to be $56,300. From this information, the school board decided that the median income for all households in the district was probably between about $52,000 and $60,000. Describe the difference between descriptive statistics and inferential statistics in the context of this example.
A fast food arrives at a fast drive through rest restaurant 6 minutes after it opens and then the arrival times for the next four customers in order are 3minutes, 8 minutes, 2 minute, and 5minutes.
Using Excel, construct a frequency histogram of the data set. Use the guidelines in the class notes. What would be more appropriate measure of central tendency
If a null hypothesis is rejected at a significance level of .01, it will ______ be rejected at a significance level of .05
Describe a simulation to estimate the probability of answering at least four of the ten questions correctly. carry out three repititons. estimate the probability
Use the marginal probabilities of school quality, school cost or convenience, and other to comment on the most important reason for choosing a school.
The ratings are normally distributed with a mean of 200 and a standard deviation of 50. If 40 different applicants are randomly selected, find the probability that their mean is above 215.
The walls of a vacuum chamber are punctured so that air (γ = 1.4) can flow in. What is the final temperature of the air in the chamber? Assume the temperature of the atmosphere is 300 K?
What does the coefficient of determination tell you about the variation attendance and the variation in the number of exhibitors?
Find the X2 statistic and its P-value. Take the square root to obtain the z statistic for comparing two proportions. This is the statistic that the Supreme Court used in its criterion for statistical significance.
During the 1890s, what did organizations such as the Sons of Confederate Veterans want to teach a new generation of white southerners?
Kindergarten. Companies that design furniture for elementary school classrooms produce a variety of sizes for kids of different ages.
Under what conditions can optimal allocation be expected to perform much better than proportional allocation? Do these conditions occur in Lockhart City?
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