5,395 Answered Questions for the topic probability

Probability Distribution

01/29/21

normal distribution with µ= 500 and s= 100 .
Scores on the SAT form a normal distribution withµ= 500 ands=100.a) What is the minimum score necessary to be in the top 20% of the SAT distribution?
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Probability

01/28/21

Determine the probability of drawing a club returning it and then drawing a red card
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Probability

01/28/21

Determine the probability of drawing a club returning it and then drawing a red card
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Probability

01/27/21

What is P(factor of 60)?
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Probability

01/26/21

A sample 300 footballers is to be drawn from a population 3000. Team A has 600 footballers and term B has 300 more than team than team C. How many footballer would be drawn from each team?
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Probability Precalculus Statistics

01/26/21

A random number generator selects three numbers independently, each from 1 through 10. Find the probability of the event.
One number is 2, 4, or 6, and the other two numbers are 3, 5, 7, or 9.
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Probability Precalculus

01/26/21

A shipment of 25 flat screen televisions contains three defective units. In how many ways can a vending company purchase four of these units and receive the following?
a) all good units_____ waysb) two good units_____ waysc) at least two good units_____ ways
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Probability Precalculus Statistics

01/26/21

One card is selected at random from a standard deck of 52 playing cards. Use a formula to find the probability of the union of the two events.
The card is a face card or a black card.
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Probability Precalculus

01/26/21

Find the probability for the experiment of drawing two marbles (without replacement) from a bag containing one green, four yellow, and three red marbles.
Neither marble is yellow.
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Probability Math

01/26/21

probability in math
There are 34 employees in a certain firm. We know that of 24 these employees are​ male, 4 of these males are​ secretaries, and 9 secretaries are employed by the firm. What is the probability that... more
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Probability Precalculus

01/26/21

Probability precalculus word problem
A law office interviews paralegals for 10 openings. There are 15 paralegals with two years of experience and 19 paralegals with one year of experience. How many combinations of six paralegals with... more
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Probability Precalculus

01/26/21

Five couples have reserved seats in a row for a concert. In how many different ways can they be seated when:
a) there are no seating restrictions?b) each couple sits together?
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Probability Math Statistics

01/25/21

Probability Distribution/ Solving Random Variables
1.    An experiment was conducted where rats have injected virus and check if they will survive or not. Find the probability that at most 2 rats will survive given the probability distribution of... more
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01/24/21

The local diner employs three servers, Ally, Benny, and Charli. On Monday night Ally served 40% of the customers, while Benny served 27%. What percent did Charli serve?
a. The local diner employs three servers, Ally, Benny, and Charli. On Monday night Ally served 40% of the customers, while Benny served 27%. What percent did Charli serve?b. That night 60% of... more
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01/24/21

The local diner employs three servers, Ally, Benny, and Charli. On Monday night Ally served 40% of the customers, while Benny served 27%. What percent did Charli serve?
a. The local diner employs three servers, Ally, Benny, and Charli. On Monday night Ally served 40% of the customers, while Benny served 27%. What percent did Charli serve?b. That night 60% of... more
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01/24/21

The probability of picking the winning 4-digit number in a Pick 4 lottery is 1/10,000. Each play of the lottery is independent of the next play.

(a) If you take a very large random sample of purchased lottery tickets, about 0.01% of the tickets will be winners. (True or False?)(b) If 10,000 people play the Pick 4 lottery, exactly 1 person... more
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Probability Math Statistics Highschool

01/23/21

statistics help!
Your student email account requires you to choose a password of 4 letters followed by one of the digits 0-9. The password can consist of upper case letters (26) or lower case letters (26). How many... more
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Probability Math Business Statistics

01/22/21

STATISTIC AND PROBABILITY
A random sample of 60 students in the business statistics course answered a survey on the average number of hours they spent on statistics each week. Unfortunately, the original data were lost,... more
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01/22/21

Statistic and Probability
Thirteen internists in the Midwest are randomly selected, and each internist is asked to report last year’s income. The incomes obtained are: 216000, 240000, 122000, 135000, 166000, 236000, 227000,... more
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01/22/21

Statistic and Probability
The number of items rejected daily by a manufacturer because of defects for the last 30 days are: 20, 21, 8, 17, 22, 19, 18, 19, 14, 17, 11, 6, 21, 25, 4, 19, 9, 12, 16, 16, 10, 28, 24, 6, 21, 20,... more
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01/21/21

Probability Question

 A) A card is drawn at random from a well shuffled pack of 52 cards. What is the probability that the card is neither a spade nor a Jack?      B) Six friends Aisha, Bilal, Kamran, Danish, Emaan and... more
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Probability

01/20/21

What is the probability that the bag has buttons?
A company makes 150 bags.37 of the bags have buttons but no zips.45 of the bags have zips but no buttons.23 of the bags have neither zips nor buttons.A bag is selected at random.What is the... more
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Probability

01/19/21

probability igcse
two fair dice are rolled the scores on the two dice are added to give the total.Given that the score on at least one of the dice is 2 calculate probability that total is 5
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Probability Math Statistics

01/15/21

Statistics Question
A potential buyer will sample videotapes from a large lot of new video tapes to check for defective tapes. If five percent of the lot is defective and she takes a random sample of 80 tapes, what is... more
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Probability Statistics

01/15/21

Statistics probability question
A study of college students found that the average amount of sleep they got a night follows a normal distribution with a mean of 6.45 hrs and standard deviation of 1.5 hrs.What are the mean and... more
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