a.) If one pregnancy is selected at random, what is the probability it will last more than 275 days? b.) What percentage of pregnancies last between 270 and 280 days? c...

a.) If one pregnancy is selected at random, what is the probability it will last more than 275 days? b.) What percentage of pregnancies last between 270 and 280 days? c...

In 5-card poker, the number of outcomes favorable to an event E is given in the table. Find the probability of being dealt no pair

Memory= 1Gb, 2Gb, 4Gb, 8Gb, 16Gb, 32Gb Color= Purple, Black, White

The time it takes me to wash the dishes is uniformly distributed between 11 minutes and 20 minutes. What is the probability that washing dishes tonight will take me between 17 and 18 minutes...

If there are 2 elevators and the building has 4 floors what are the chances that at least one of the elevators is on the same floor as you are?

A bag contains 3 red marbles and 4 green marbles. A blind folded student selects 2 marbles. Find the probability that both marbles they will be of i) the same colour ii)a different...

Multiple-choice questions each have 5 possible answers, one of which is correct. Assume that you guess the answers to 4 such questions. Use the multiplication rule to find the probability...

If a seed is planted, it has a 70% chance of growing into a healthy plant. If 7 seeds are planted, what is the probability that exactly 4 don't grow?

A board game uses the deck of 20 cards. Two cards are selected at random from this deck. Calculate the probability that both cards selected have a lion, both with and without replacement

A jury has 12 jurors. A vote of at least 10 of 12 for "guilty" is necessary for a defendant to be convicted of a crime. Assume that each juror acts independently of the others and that the...

The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The distribution of the number of daily requests is bell-shaped and has a...

Of the 193 member countries of the United Nations, 54 are in the African Group and 23 are in the Eastern European Group. Suppose that a country is selected at random from the members of the United...

You play softball and have a batting average of .333, meaning that you average about one hit in every three times at bat. During your 35-game season, you have one game in which you get a hit each...

A box contains 1414 balls numbered 1 through 1414. Two balls are drawn in succession without replacement. If the second ball has the number 4 on it, what is the probability that the first ball had...

We have a random roll that results in either 0 or 1, depending on the chance C. We roll multiple times, starting with chance 1.0, decreasing the chance, until the result hits 0 for the first time...

can't understand the meaning of it will be replaced by two marbles o

two events A and B are such that P(A)=.2 and P(AuB) =.5 given that A and B are mutually exclusive, Find P(B)

Jar A contains 3 red marbles and 5 green marbles. two marbles are drawn from the jar, one after the other, without replacement. Find the probability that none are green. Fund...

A jury has 12 jurors. A vote of at least 10 of 12 for "guilty" is necessary for a defendant to be convicted of a crime. Assume that each juror acts independently of the others and that the...

2a. Samantha goes to school five days a week. when it rains, the probability that she goes to school by bus is 0.5. When it does not rain, the probability that she goes to school by bus is 0.3. The...