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1. An urn has two white and three green balls. A number is selected at random from 1; 2; 3; 4; 5, and then that many balls are taken out from the urn. Find the probability that they are all green.
2. An urn has five white and five green balls. Five balls are drawn at random without replacement. Find the probability that in each odd-numbered draw a green ball is drawn.
3. On a table, there are two dice. One is a fair die, and the faces of the other die are 1, 1, 2, 2, 6, 6. One die is selected at random and rolled, and it gives a six. What is the probability that it was the fair die?
The sat scores attainted by the students in nyc are approximately normally distributed with a mean of 500 and a standard deviation of 80. Find the percentage of students who score less than 700.
the following data show the number of fruit fly killed at varying concentrations of nicotine.the number of ies killed
Explain these results to a person who understands the t test for a single sample but knows nothing about the t test for independent means.
Disney tells you that the average distance between the ears on a Mickey Mouse hat is 5 inches. In a sample of 100 Mickey Mouse hats you find that the average distance between the ears on the hats is 5.2 inches with a standard deviation of 1 inch.
a scientific committee of 4 persons is to be randomly selected from a group consisting of 3 biologists 3 physicists and
The production manager uses a DSS to make decisions about what to do. The maximum attainable profit is required. Develop a simple DSS prototype to solve this problem. a. How many of each kind of bike should be ordered? b. What is the total profit r..
The Gallup organization conducted a telephone survey with a random selected national sample of 1005 adults, 18 years and older. The survey asked the respondents, "How would you describe your own physical health at this time? "Response categories w..
Calculate the correlation between decorating and Christmas enjoyment - Maximize Wayne's studying effectiveness.
The middle five weeks, and 60% during the last 5 weeks. Would a time-series graph of this data be appropriate? Give a reason for your answer.
suppose a previous study has shown the sample standard deviation of a particular model of automobile to be 3.12 mpg.
Is the normal distribution (or its special case, the standard normal distribution) effective in characterizing situations and/or in helping managers make decisions?
A study conducted by the research department of a pharmaceutical company claims that the annual spending (per person) for prescription drugs for allergy relief is greater than or equal to the annual spending (per person) for non-prescription aller..
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