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A random sample of 400 college students was selected and 120 of them had at least one motor vehicle accident in the previous two years. A random sample of 600 young adults not enrolled in college was selected and 150 of them had at least one motor vehicle accident in the previous two years. At the .05 level, you are testing whether there is a significant difference in the proportions of college students and similar aged non college students having accidents during the two year period. What are your critical values?
The data consists of random sample of 30 households from the 2007 American Community Survey. Construct a frequency distribution and a histogram for each data set.
Probability based on a random experiment - What is the probability, without looking in the drawer
Based on this sample information, create a 90% confidence interval for population mean yearly premium.
The function that defines the probability distribution of a continuous random variable is a?For a continuous random variable x, the probability density function f(x) represents.
Use frequency distribution to create a probability distribution, determine the (b) mean,(c) variance and (d) standard deviation of probability distribution and (e) interpret results in context of real life situation.
Does the normal distribution yield a good approximation of the actual results?
Gas consumption of 3 cars (labeled car A, car B, and car C) using 4 different kinds of gasoline. Is there difference among kinds of gasoline?
Kind of examination produced significant main effects on both mean mark and time taken to complete the examination.
What is the mean of this uniform distribution? What is the standard deviation?
What is the probability that the next 100 customers will spend an average of less than $56 on dinner?
Finding the probability of a pointer to land in a color among given three colors.
Find a 90% confidence interval for the population mean weight of all such turtles.
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