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1. Based on a sample of 100 individuals, the values 1, 2, 3, 4, 5 are observed with relative frequencies 0.2, 0.3, 0.1, 0.25, 0.15. Compute the mean, variance and standard deviation.
2. Fifty individuals are rated on how open minded they are. The ratings have the values 1, 2, 3, 4 and the corresponding relative frequencies are 0.2, 0.24, 0.4, 0.16, respectively. Compute the mean, variance and standard deviation.
there are 40 students in an elementary statistics class. on the basis of years of experience the instructor knows that
Compute P(X) using the binomial probability formula. Then determine whether the normal distribution can be used to estimate this probability. If so, approximate P(X) using the normal distribution and compare the result with the exact probability. ..
questiona search the internet for the latest figures you can find on the age and sex of the australian population.b
suppose that only 25 of all drivers come to a complete stop at an intersection having flashing red lights in all
The ratio of what two numbers in the ANOVA tables gives you the F value? a. 4 and 115 b. 12.327 and 106.464c. 3.082 and .926 d. 119 and 115
two wharton professors analyzed 1613234 putts by golfers on the professions golfers associations pga tour and found
which of the following is not a decision variable when formulating the project crashing problem as a linear program?the
Where Z~N(0,1). Also let [empty set symbol] denote the standard normal density function. Show that, d/dx [empty set symbol] (- square root of x) = -1/2 x^-1/2 [empty set symbol] (-square root of x).
1. two manufacturing plants produce similar parts. plant 1 produces 1000 parts 100 of which are defective. plant 2
in 2010 a gallup poll surveyed 1016 households in the u.s about their pets. of those surveyed 599 said they had at
a study commissioned by a clothing manufacturer measured the waist size of 250 men finding a mean of 36.33 inches and a
In talking about cultural and environmental blocks, we discussed the matter of a woman bringing an infant into the workplace and the possible reactions of others. Consider the situation in which a classmate wants to bring her child to school in or..
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