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A class of second graders has a mean height of five feet with a standard deviation of one inch. If the data was not normally distributed, at least what percentage of the class must be between 4'10" and 5'2"?
Estimate the mean number of cars per household for the population of households in the neighborhood. Give the 95% confidence interval.
A total of 183 residents show up for a public hearing on the proposal, and a show of hands finds only 31 in favor of the prison project.
Please explain the difference between confidence interval and significance level and how they interact or "influence" each other.
For the data in Table, perform the paired T test for means using the weights for the east and south sides of the trees. Verify that the p-value is 0.09.
A lepidopterist wishes to estimate the frequency with which an unusual form of a certain species of butterfly occurs in a particular district
A social psychologist records the number of outbursts in a sample of different classrooms at a local school. Based on the statement below.
The time between breakdowns of aging machines is known to be exponentially distributed with a mean of 25 hours. The machine has just been repaired.
College softball programs have a limited number of scholarships to offer promising high school seniors, so the programs invest a great deal of effort in evaluating these players.
question1. if there are an odd number of data values in a set the median will be thea. value that appears the greatest
Real estate mogul Donald Trump argues that good management is essential to any business. But who is he to talk? Trump's own mismanagement drove Trump.
What proportion is that of the 400 members in town? What is the approximate probability that the actual proportion requiring aid will exceed that value?
suppose instead the data from problem 1 and 4 were taken on the same process thus the data are no longer independent.
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