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A recent National Science Foundation (NSF) survey indicates that more than 20% of the staff in U.S. research and development laboratories are foreign-born. Results of the study have been used for pushing legislation aimed at limiting the number of foreign workers in the United States.
An organization of foreign-born scientists wants to prove that the NSF survey results do not reflect the true proportion of foreign workers in U.S. laboratories.
The organization collects a random sample of 5,000 laboratory workers in all major laboratories in the country and finds that 876 are foreign. Can these results be used to prove that the NSF study overestimated the proportion of foreigners in U.S. laboratories?
An insurance company insures a large number of homes. The insured value, X, of a randomly selected home is assumed to follow a distribution with density function f(x)=4x-5 , for x>1. Given that a randomly selected home is insured for at least 2, what..
Is the gender distribution for theater goers significantly different from the distribution for the general college? Test at the .05 level of significance.
what is the probability that the next subgroup average will fall outside the control limits? On average, how many subgroups will have to be looked at in order to detect this shift?
q1. mimi was the 5th seed in 2012 umuc tennis open that took place in august. in this tournament she won 83 of her 100
Devise and implement a sampling experiment for estimating the distribution of the minimum bid and expected value of the minimum bid.
suppose we draw 13 cards out of a deck of 52. what is the expected value of the number of aces we
With reference to Exercise 38, what can we say with 99% confidence about the maximum error if we use the observed sample proportion as an estimate of the proportion of all shoppers in the population sampled who use coupons?
in a 2 x 3 x 3 analysis of variance the number of cells
What is the relationship between descriptive statistics and Affirmative Action ? Can using probability in market trending decisions lead to a bad decision? Explain?
in a certain town 10 of the families have no children 10 have one child 40 have two children 30 have three children and
Your paper should in 500- 600 words 1) summarize the statistical methods that the researchers used in their article and 2) evaluate those statistical methods. Were the techniques they picked (correlation, hypothesis testing, regression, for exampl..
Use the .05 significance level and the 5 step hypothesis testing process to check if there is a difference in the mean flight times among the three airlines.
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