Number of results: 10
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Sunday, April 7, 2013 at 11:08pm by PsyDAG
7/(grand total) = ?
Sunday, April 7, 2013 at 11:12pm by PsyDAG
A coin is tossed 4 times. Find the probability that the 4th toss is a tail, given that the first 3 tosses were all heads.
Sunday, April 7, 2013 at 11:15pm by Lynn
an apartment building has the following apartments: 2 bdrm 3 bdrm 4 bdrm 1st floor
Sunday, April 7, 2013 at 11:08pm by Lynn
Find the mean of the distribution shown. x 2 5 7 P(x) 0.28 0.42 0.30 What is the mean and the standard deviation of this distribution?
Sunday, April 7, 2013 at 11:20pm by Lynn
The number of movies shown in different theatres on Saturday morning in a small city is given in the following. x P(x) 1 0.15 2 0.20 3 0.30 4 0.10 What is the mean distribution (or expectation) of the data given above?
Sunday, April 7, 2013 at 11:17pm by Lynn
A multiple choice quiz consists of 20 questions, each with 3 possible equally likely answers. If a student guesses at the answer to each question, then the mean number of correct answers selected by the student is?
Sunday, April 7, 2013 at 11:21pm by Lynn
At a certain college, there were 780 science majors, 320 engineering majors, and 390 business majors. If one student was selected at random, the probability that they are a business major is?
Sunday, April 7, 2013 at 11:06pm by Lynn
According to an Internet posting, 65% of adults enjoy drinking soda. Choose a group of 12 adults at random. The probability that none of them enjoy drinking soda is?
Sunday, April 7, 2013 at 11:14pm by Lynn
An apartment building has the following apartments: 2 bdrm 3 bdrm 4 bdrm 1st floor 7 3 4 2nd floor 9 0 11 3rd floor 8 4 7 If an apartment is selected at random, what is the probability that it is a 2 bedroom apartment on the 3rd floor?
Sunday, April 7, 2013 at 11:12pm by Lynn