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1. Understanding Standard Deviation A sample consists of 10 test scores that fall between 70 and 100 inclusive. What is the largest possible standard deviation?
2. Phony Data? For any data set of n values with standard deviation s, every value must be within s 2n 2 1 of the mean. A statistics teacher reports that the test scores in her class of 17 students had a mean of 75.0 and a standard deviation of 5.0. Kelly, the class's self-proclaimed best student, claims that she received a grade of 97. Could Kelly be telling the truth?
Consider the following number of defective circuit boards produced by two different machines on seven randomly selected days. To three decimel places what is the mean of machine A?
In particular, discuss whether there is enough information presented in the article to arrive at the same conclusion as reported."
The mean diastolic blood pressure for random sample of 90 people was 92 millimeters of mercury. If the standard deviation of individual blood pressure readings is known to be 12 millimeters of mercury
a retailer of electronic equipment received six hdtvs from the manufacturer. three of the hdtvs were damaged in the
Share with your peers the null and alternative hypotheses for a decision that is relevant to your life. This can be a personal item or something at work.
Use the binomial distribution to determine the probability that a student will get at least 8 out of 10 questions on a ten question multiple choice test correct by just guessing if each question has four
Can you describe in detail the differences in ANOVA and the five-step hypothesis testing method?
after finishing the competition in 24th place you have a little extra spending money to have fun with in vegas.
the r.r. bowker company collects information on the retail prices of books and publishes the data in the bowker annua
Average electric use was studied.a previously known population standard deviation was 450KWH. a sample of 81 houses was studied and found to have a mean of 1858 KWH. Find the 95% confidence interval for the true mean.
sampling plan for a movie promotion. advertising companies often try to characterize the average user of a clients
the height of woman ages 20-29 is normally distributed with a mean of 63.8 inches. assuming the standard diviation
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