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In a random sample of 1800 observed values from the interval (0,1), it was found that 391 values were between 0 and 0.2; that 490 values were between 0.2 and 0.5; that 580 values were between 0.5 and 0.8; and that 339 values were between 0.8 and 1. Test the hypothesis that the random sample was drawn from a uniform distribution on the interval (0, 1) by carrying out a X2 test of goodness-of-fit at the level of significance 0.01.
Ontario Health Survey The Ministry of Health in the province of Ontario, Canada, wants to know whether the national health care system is achieving its goals.
The figure shows a scatterplot of the wages and educational level of some people. Describe what you see. Explain the trend and mention any unusual points.
(a) Determine the probability that he will be late on the second day of class. (b) Determine the probability that he will be on time on the fourth day of class
Suppose X is a vector of IID random variables where each element has some PDF- Find an example PDF such that the median is a better estimate of the mean than the sample mean.
The management of White Industries is considering a new method of assembling its golf cart. The present method requires 42.3 minutes, on the average, to assemble a cart.
Two drugs, amantadine (A) and rimantadine (R), are being studied for use in combating the influenza virus. A single 100-mg dose is adminis- tered orally to healthy adults. The response variable is the time (minutes) required to reach maximum conce..
a lottery offers one 1000 prize one 500 prize five 100 prizes and ten 10 prizes one thousand tickets are sold. what
The table below gives the loan requests (in thousands of dollars) for the past 12 months. Would you say that the local business economy is heating up or cooling down? Explain your answer. Graph the data.
For the equation: x = e^-pt (C_1e^qt + C_2e^-qt), where C1 and C2 are arbitrary constants, if I let F = C1 + C2 and G = C1 - C2, how do I obtain:
a fair die is rolled 100 times. using central limit theorem estimate the probability that the sum of the faces is at
Compute Cohen's d to measure effect size for both test ( standard deviation 20 and 10) If the population standard deviation is 10.
(Proof of a Weaker Version of the Duality Theorem) Show that if the primal problem is feasible and the intervals Xij are compact, then the optimal primal and dual costs are equal (even though the dual problem may not have an optimal solution)
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