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Winning the lottery
A state lottery's Pick 3 game asks players to choose a three-digit number, 000 to 999. The state chooses the winning three-digit number at random, so that each number has probability 1/1000. You win if the winning number contains the digits in your number, in any order.
(a) Your number is 456. What is your probability of winning?
(b) Your number is 212. What is your probability of winning?
in a two-group intervention study what is the meaning of a t-test with p value of 0.03 result?a there is a high
What is the probability that the mean duration of these patients pregnancies will be less than 258 days?
Using standard methods for linear statistical prediction, find the percent increase in sales revenue that would be expected if the price were lowered by 15%. Find the usual measure of the strength of association between price reduction and sales re..
(a) Calculate the three-period moving average trend of pelagic fish caught off the west coast. (b) Plot the actual catches of pelagic fish and the moving average trend on the same graph. Comment on the pattern of pelagic fish catches over the past..
The time spent by a factory worker A packing a box is a random variable with mean 3.5 minutes and standard deviation 1 minute. The times spent packing any two boxes are independent.
Morning the office you are monitoring has eight office visits on the schedule. What is the probability of the following - Compute the probability of success on a single trial. Round your answer to three decimal places.)
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A researcher measures a response variable Y and explanatory variable X on each of several objects. A scatterplot of the measurements is as follows.
Suppose that a random sample of 15 consumers agrees to participate in a study aimed at proving this claim, and that their results, extrapolated to savings per gallon per year are ($): 0.95, 1.07, 1.09, 1.12, 0.85, 1.17, 1.25, 0.82, 0.99, 1.02, 1.1..
Suppose you purchase two microwaves that were produced at the same factory, which is equally likely to have been either factory A or factory B. If the first microwave that you check is defective, what is the conditional probability that the other ..
Which is better and corresponds to the higher relative position, a score of 92 on a test with mean of 71 and standard deviation of 15, or a score of 688 on a test with a mean of 493 and a standard deviation of 150?
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