Posted by **Joe D.** on Saturday, February 11, 2012 at 12:27pm.

If red has a probability of occurrence of .70 and black has a probability of occurrence of .30 and they are the only choices what is the probability that you pick the right color 10 out of 10 times and what is the standard deviation. I keep getting (.70*.50) + (.30*.50) = .50, IT THIS CORRECT AND WHAT IS STD DEV?

## Answer This Question

## Related Questions

- Statistics - Red has probability .30 and black has probability .70. What is the ...
- math - Two events are _________ if the outcome or occurrence of the first ...
- statistics - I have an ordianry deck of 52 cards, which has 26 red and 26 black ...
- statistics - 15.34 In a four-digit lottery, each of the four digits is supposed ...
- probabilities - The proportion of red marbels in a large jar of red and black ...
- Math Probabilities - A bag contains 9 red chips and 12 blue chips. Two chips are...
- Math: Probability - I need help. Here's the queston. Julia has 3 red marbles, 4 ...
- balls in a bowl probability - Bowl one contains 3 black and 2 white balls. Bowl ...
- Statistics - Over time, a student analyzes her ability to guess correctly after ...
- math - susan, joanne, and diane are triplets. susan has red, blue, green, and ...

More Related Questions