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The number of telephone calls that arrive at a phone exchange is often modeled as a poisson random variable. assume that on average there are 10 calls per hour,
a) What is the probability that there are exactly 5 calls in one hour?
b) What is the probability that there are 3 or fewer calls in one hour?
c) What is the probability that there are exactly 15 calls in tow hours?
d) What is the probability that there are exactly 5 calls in 30 minutes?
in 2010 when she was a high school senior alysha scored 670 on the mathematics part of the sat. the distribution of sat
Find the p-value and interpret it. (f ) If statistically significant, do you think the difference is large enough to be important? If so, to whom, and why? (g) Is the normality assumption fulfilled? Explain.
you are in possession of an unusual 5-sided die. specifically the die which is not evenly weighted takes on five
Calculate the mean, median, range, and standard deviation for the Body Fat Versus Weight data set. Report your findings, and interpret the meanings of each measurement.
Note that under the exponential assumption, P(X>t) = exp(-t/theta). If t=5, use the result from (a) to find an approximate one-sided lower 95% confidence limit for theta.
michaels teacher informed him that his score of 98 on the last algebra test corresponded to a z-score of -2.12. which
Statistics is science of conducting studies to: Solve a system of equations.
prepare a 2 slide microsoft powerpoint presentation with speaker notes how to use a z-test to test the null hypothesis
during a test period an experimental group of 10 vehicles using an 85 ethanol-gasoline mixture showed mean co2
The weekly dollar demand and supply functions for tents, t, are given by the following respective formulas:
useless airways advertises that on average its new york to london flight takes five hours and 30 minutes. the federal
1. assume that event a occurs with probability 0.4 and event b occurs with probability 0.5. assume that a and b are
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