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For a population with a mean equal to 100 and a standard deviation equal to 25, calculate the standard error of the mean for the following sample sizes.
A. 10
B. 40
C. 70
in a recent survey ten percent of the homes in montana were found to own a miley cyrus action figure. in a sample of
A mean of 200 and a standard deviation of 20. Determine the number of boxes,x, where 80% of the number of boxes received is less than x.
Critically illustrate out the range? What is the arithmetic mean income? What is the population variance?
Draw a back-to-back stem-and-leaf plot, with drug users on the right and discuss similarities and differences between the two data sets. There should be three things you look at when comparing these - location, variation, and general shape.
Which test should we use to determine whether the difference between Mesa and Tempe is statistically significant? Why? Should it be one or two-tailed?
question 1 the amount of jen s monthly phone bill is normally distributed with a mean of 50 and a standard deviation
The correlation between his test and the BDI was r =.14. Evaluate this correlation. What does this correlation tell us about the relationship between these two instruments?
The number of choco chips in an 18 ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1256 and a standard deviation of 129 chips, What is the probability that a randomly selected bag contains fewer than 1000 c..
A random sample of 56 fluorescent light bubs has a mean life of 645 hours with a standard deviation of 31 hours.
question 1 in 1999 lehman brothers estimated that 48 of its investment bank traders took diverse forms of soft drugs.
A college class believes that the average grade average of psychology students and the average grade averages of biology students are different.
Determine whether the hypothesis test involves a sampling distribution of means that is a normal distribution, Student t distribution, or neither.
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