# math-Probablity

137,426 results

### Math-probablity

Assume a family is planning to have three children. A. What is is the probablity of a family having 2 girls. B. The probablity of a family having at least 1 boy. C. List the sample space using a B for Boy and G for girl (Hint there should be 8 possible outcomes).

### math probablity

Assume a family is planning to have three children. A. What is is the probablity of a family having 2 girls. B. The probablity of a family having at least 1 boy. C. List the sample space using a B for Boy and G for girl (Hint there should be 8 possible outcomes). ??????

### probablity

You are off to soccer and love being a goalkeeper, but that depends who is the coach today : - with coach Ahmed the probablity of being a goalkeeper is 0.5 -with coach Usman the probability of being a goalkeeper is 0.3 Ahmed is coach more often.About 6 out of every 10 games ( ...

### math

You are off to soccer and love being a goalkeeper, but that depends who is the coach today : - with coach Ahmed the probablity of being a goalkeeper is 0.5 -with coach Usman the probability of being a goalkeeper is 0.3 Ahmed is coach more often.About 6 out of every 10 games ( ...

### maths

You are off to soccer and love being a goalkeeper, but that depends who is the coach today : - with coach Ahmed the probablity of being a goalkeeper is 0.5 -with coach Usman the probability of being a goalkeeper is 0.3 Ahmed is coach more often.About 6 out of every 10 games ( ...

### math

the probability of havingtype O blood is 1/2 and the probablity if having type A blood is 1/4. what is the probablity of a person having either typr O blood or type A blood ?

### Help????????????????????/

Assume a family is planning to have three children. A. What is is the probablity of a family having 2 girls. B. The probablity of a family having at least 1 boy. C. List the sample space using a B for Boy and G for girl (Hint there should be 8 possible outcomes).

### Math

How good are you with probablity

### math algegra

one type of probablity used practically daily is?

### College Math

How are statistics and empirical probablity related? What is a specific scientific decision?

### math

What is the probablity of getting at least one head as a result of flipping 6 fair coins?

### AU

What is probablity of 62 and probability of 59 with Mean of 60 and SD of 7

### math

What is the probablity a number cube will stop ona number less than 6?

### math

probablity to the nearest tenth of a percent 11/68 to a decimal and percent

### math

An unprepared student makes random guesses for the ten true or false questions on a quiz.find the probablity that there is at least one correct answer.

### statistics

TOSS 2 PENNIES 20 TIMES. WHAT IS THE PROBABLITY OF GETTING 2 HEADS

### math-Probablity

A packet of carrot seeds has a germination rate of 92%. In other words, the probability of any seed sprouting is 0.92. How many seedlings would you expect in a row of 50 seeds?

### math

The ages of a population of 300 is normally distributed, with a mean of 45 and a standard deviation of 4. If you randomly selected a member of the population, what is the probablity that his or her age would be greater than 49?

### Math

A certain deck of cards consists of only 10's, Jacks, Queens, and Kings, and is divided up evenly in a 52 card deck. what is the probablity of NOT drawing a jack? HELP ASAP!!!!!!!

### Math

The combinations on the lockers at the highschool consist of three numbers, each ranging from 0 to 39. If a combonation is chosen at random, what is the probablity that the first two numbers are multiples of 9, and the third number is a multiple of 4?

### math

if two-card hand is dealth from a well-shuffled deck of 52 cards, what is the probablity that the hand contains two kings?

### MATH

you have 4 blue crayons, 2 red and 3 orange, what is the probablity of pulling a red crayon and then an orange without replacement?

### Statistics

If you roll two dice what is the probablity of getting one 2? I think the answer is 1/6 but I'm not sure

### math

The odds against pats winning the election are 6:7 with these odds, what is the probablity that pat will win the election.

### math

How can one calculate the odds of winning the jackpot in the lottery. The probablity is the number of ways to win (usually one) divided by the number of possible entries.

### Probability

if two fair dice are rolled, what is the probablity that the total showing is even or less than seven?

### Statistics

There is a random selection of 150 students. What is the probablity that the sample percentage of correct identification is greater than 75%?

### math

a bag contains 7 red marbles, 8 blue marbles and 4 green marbles. what is the probablity of choosing a blue marble?

### math probablity- Respond as soon as possible

Assume a family is planning to have three children. 1. Why do probabilities centered around this scenario represent the same probabilities as those for flipping three coins

### math

there are 3 miniature chocolate bars and 5 peaunt butter cups in a candy dish. judie chooses 2 of them at random. What is the probablity that both she chooses 2 miniature choclate bars?

### math-Probablity

A student is writing a multiple choice test consisting of 40 questions, each of which provides four possible choices. He is certain that he has 16 questions correct. If he guesses for all of the remaining 24 questions, what is the probability that he will pass the test?

### Math (Probablity

Suppose a random variable X has mean μX = 6.3, and variance V(X) = 2.2. According to Chebyshev's Theorem, what is the upper bound for the probability that the distance between the value of X and μ will be at least 4.8? I don't even know where to start. But If I can ...

### math-Probablity

A golfer makes 80% of her putts from a distance of 5 metres or less from the hole. In order to calculate the probability that she would make 23 out of 27 putts or better on a given day, what boundary value should be chosen for X in order to find the appropriate z-score?

### PROBABLITY

the nearest tenth percent of 9/68 decimal and percent

### Math

Ok please help me. Here is my stats question Suppose there is a 20% chance of striking oil at a certain location. An oil company drills at 5 different spots. What is the probablity of them striking oil on at least one of the spots? Any help is greatly appreciated

### Probability

Find the probablity of getting a sum of at least 8 by tossing a six-sided die twice. I keep getting 5/36 but my book says 5/12.

### math

If the variance of a light bulb is 400 and the mean lifetime of a light bulb is 600 hours. find the probablity of a light bulb lasting at most 622 hours

### Math

A bag contains 5 balls,8 white balls, 9 green balls,7 blue balls& 6 yellow balls.A ball is drawn at random .Find the probablity that the ball in neither green nor red ?

### statistics

1- The ages of a population of 300 is normally distributed, with a mean of 45 and a standard deviation of 4. If you randomly selected a member of the population, what is the probablity that his or her age would be greater than 49?

### STATISTICS

ASSUME THE THE MEAN WEIGHT OF CHILDREN AGES 7 IS 50 POUNDS AND A STANDARD DEVIATION OF 10. wHAT IS THE PROBABLITY THAT A RANDOM SELECTED 7 YEAR OLD WILL HAVE A WEIGHT THAT IS LESS THAT 65

### Math

I'm trying to calculate probablity of dependent and independent events. For example, from 3 nickels, 2 dimes, and 5 quarters, what is the probability of drawing 1 nickel, 1 dime, and 1 quarter in that order without replacement? Or drawing the same in any order with replacement...

### Math

I have a few questions on my homework assignment. I've been sick and I have no idea what I'm doing. Question 1: Assume the hights of high school bball players are normally distributed. For the boys the mean is 74" with a standard deviation of 4.5" while girl players have a ...

### Math

Two lamps are to be chosen from pack of 12 lamps where four are defective and the rest are non defective. what is the probablity that a.both are defective? b.one is defective? c.at most one is defective?

### Math

In Lloyd's pocket are 6 coins: 3 dimes, 2 nickels, and 1 penny. If Lloyd randomly takes two coins out of his pocket, what is the probablity that he will take out 11 cents? The book shows the answer 1/5, but my question is wouldn't the number of each coin come into play?

### statistics

Scores for men on the verbal portion of the SAT-1 test are normally distributed with a mean of 509 and a standard deviation of 112. If a man is randomly selected, find the probablity that his score is at least 571

### probablity

A bag of marbles has 3 red, 6 blue, and 3 white marbles in it. What is the probability of reaching in and selecting a red marble? (without looking

### Math

A vendor has 14 hellium ballons for sale: 9 are yellow, 3 are red, and 2 are green. A ballon is selcted at random and sold. If the ballon sold is yellow, what is the probablity that the next ballon selected at random, is also yellow?

### Probablity

What are the odds against an earthquake occuring on a certain day in a certain area if the odds of it occurring is 0.05?

### math help please

two cards are dealt in succession from a standard deck of cards. what is the probability that the second card is red give that the first card was a heart. so i do p(R/H), then i know you go R*H/H. but how do i get the probability please explain! thanks. if 2 dice are rolled, ...

### elementary statistics

at a particular school with 200 male students, 58 play football 40 plays basketball and 8 plays both. what is the probablity that a randomly selected male student plays neither

### math

A drawer contains 4 red socks, 3 white socks, and 3 blue socks. without looking, you select a sock at random, replace it and seect a sond sock at random. what is the probablity that the first sock is blue and the second sock is red?

### Probablity

Two dice are tossed simultaneously. What is the probability that “either the sum of top faces of dice is six or both top faces are similar”?

### Algebra1

A CELL PHONE ORDDERS 500 NEW PHONES FROM A MANFACTURE.IF THE PROBABLITY OF A PHONE BEING DEFECTIVE IS 2.6% PREDICT HOW MANY OF THE PHONES ARE LIKELY TO BE DEFECTIVE.ROUND TO THE NEAREST WHOLE NUMBER

### Statistics

A statistics professor plans her classes so carefully that the lengths of her class are uniformly distributed between 46.0 and 56.0 minutes. Find the probablity that given class period runs less than 51.75 minutes

### statistics

78% of us homes have a telephone. In a random sample 250 homes, what is the probablity that fewer than 50 do not have telephone

### statistics probablity

Each time that Ed Charges an expense to his credit card, he omits the cents and records only the dollar value. If this month he has charged his credit card 20 times what can be said about the probability that the record shows at least $15 less than the actual amount?

### math

I have a question in my math class in college. Here is the question, but I just need help on HOW to answer it. My text isn't clear at all. A box contains 2 black balls and 3 gold balls. 2 balls are randomly drawn in succession. a.if there is no replacement, what is the ...

### statistics

You draw two card from a standard deck of 52 cards and replace the first one before drawing the second. Find the probablity of drawing a 4 for the frist card and a 9 for the second card

### math

Delta airline flights seats 340 people. An average of 5% of the people with reservations doesnt show up, so they overbook by 350. This system can be analyzed by using binomial distribution. n=350 and p=0.95 1) Find the probablity that 350 reservations there are more passangers...

### Probability

Given the probability of rain on any given day in March is 1/5, find the probablity that: It rains on March 10 and 12, but not on March 11th. This is supposed to be used with multiplication Rule 1: P(A and B)= P(A)*P(B) cant figure it out, the answer is 4/125 and I have no ...

### Statistics

Ok please help me. Here is my stats question Suppose there is a 20% chance of striking oil at a certain location. An oil company drills at 5 different spots. What is the probablity of them striking oil on at least one of the spots? Any help is greatly appreciated

### binomial distribution

hey, i'd really appreciate some help with this question: A medical treatment is successful 75% of the time. A hospital wishes to treat a group of patients. How many patients should they take so that the probablity that all are cured is 1/10? I know that p=0.75 and q=0.25 but i...

### Probablity

Last semester, a certain professor gave 43 As out of 242 grades. If one of the professor's students from last semester were selected randomly, what is the probability that student received an A? (Assume that each student receives one grade.)

### statistics

The director of a health club conducted a survey and found that 23% of memebers used only the pool for workouts. Based on this information, what is the probablity that for a random sample of 10 members, 4 used only the pool for workouts? Please show work Thank you

### Biology

If it happens that a neurotransmitter binds to a receptor site and produces a negative voltage, the probablity: A) that the neurons are densely connected increases B) of an excitatory response increase C)That the receiving neuron will fire decrease D)that the transmitting ...

### Statistics

Suppose that about 25% of those called will find and excuse (work, poor health, etc) to avoid jury duty. If 12 people are called for jury duty, what is the probablity that 4 or more will not be available to serve on the jury? Please show work Thank you

### Statistics

In the past year, Jack's Pizaa Resturant grossed more than $1500 a day for about 83% of its business days. Suppose 8 days are randomly selected, approximate the probablity that exactly 6 days will gross more than $1500 in a day.

### statistics

Three percent of the widgets produced by machine 1121 are defective. what is the probablity that a box of 30 widgets produced by that machine contains two or more defective widgets?

### statistics

This table shows claims and their probablity for an insurance company. AMOUNT OF CLAIM PROBABILITY $0 0.65 $50,000 0.25 $100,000 0.06 $150,000 0.02 $200,000 0.01 $250,000 0.01 1. Calculate the expected value? 2. How much should the company charge as an average premium so that ...

### Finance

Following are rates of return on a medical equipment company stock, debt, and market portfolio, along with probablity of each state State Prob Ret.on Stock Ret.on Debt Ret.on Market 1 .1 3 8 5 2 .3 8 8 10 3 .4 20 10 15 4 .2 15 10 20 If the company's dept-to-equity ratio is .5...

### Finance

Following are rates of return on a medical equipment company stock, debt, and market portfolio, along with probablity of each state State Prob Ret.on Stock Ret.on Debt Ret.on Market 1 .1 3 8 5 2 .3 8 8 10 3 .4 20 10 15 4 .2 15 10 20 If the company's dept-to-equity ratio is .5...

### finance

Following are rates of return on a medical equipment company stock, debt, and market portfolio, along with probablity of each state State Prob Ret.on Stock Ret.on Debt Ret.on Market 1 .1 3 8 5 2 .3 8 8 10 3 .4 20 10 15 4 .2 15 10 20 If the company's dept-to-equity ratio is .5...

### finance

Following are rates of return on a medical equipment company stock, debt, and market portfolio, along with probablity of each state State Prob Ret.on Stock Ret.on Debt Ret.on Market 1 .1 3 8 5 2 .3 8 8 10 3 .4 20 10 15 4 .2 15 10 20 If the company's dept-to-equity ratio is .5...

### finance

Following are rates of return on a medical equipment company stock, debt, and market portfolio, along with probablity of each state State Prob Ret.on Stock Ret.on Debt Ret.on Market 1 .1 3 8 5 2 .3 8 8 10 3 .4 20 10 15 4 .2 15 10 20 If the company's dept-to-equity ratio is .5...

### finance (Repost)

Following are rates of return on a medical equipment company stock, debt, and market portfolio, along with probablity of each state State Prob Ret.on Stock Ret.on Debt Ret.on Market 1 .1 3 8 5 2 .3 8 8 10 3 .4 20 10 15 4 .2 15 10 20 If the company's dept-to-equity ratio is .5...

### Probablity

A bag has 5 red marbles, 6 blue marbles and 4 black marbles. What is the probability of picking a black marble, replacing it, and then picking a black marble?

### Probablity

Having a hard time with this question: Help Please This is a multi-stage experiment. There are 7 colored cubes in a bag. The colors are purple, blue, red, orange, white, yellow, and green. This is a multi-stage experiment with dependent events. Determine the probabilities of ...

### math

break it down into cases at most one day of rain in 3 days to me means we could have: norain norain norain ----> (1/3)^3 = 1/27 rain norain norain -------> 2/3(1/3^2 = 2/27 norain rain norain -------> same as above = 2/27 norain norain rain -------> same as above...

### Probablity

Having a hard time with this question: Help Please With Replacement: This is a multi-stage experiment. There are 7 colored cubes in a bag. The colors are purple, blue, red, orange, white, yellow, and green. This is a multi-stage experiment with dependent events. Determine the ...

### Probablity

The life time of a certain kind of batteries has a mean life of 400 hours and standard deviation as 45 hours. Assuming the distribution of life to be normal, find i) the percentage of batteries with a life time of atleast 470 hours. Ii) Out of 10000 batteries how many ...

### maths please check my answer

paul orders a pizza. chef carl randomly chooses two different toppings to put on the pizza from the following:~ pepperoni, onion, sausage, mushrooms and anchovies. if paul does not eat pizza with mushrooms, determine the probablity that paul will not eat the pizza that chef ...

### Math: Probablity

A penny, a nickel, and a dime are flipped at the same time. Each coin can come out either heads (H) or tails (T). a. What name is given to the act of flipping the coins? b. There are eight elements in the sample space (i.e., HHH,THT, etc.). List all eight outcomes. c. How many...

### Probablity

There is a bag with 200 cubes in it. Some of the cubes are red and some are black. You reach into the bag 20 times, each time picking up random cube, recording its color, and putting the cube back in the bag. You picked 7 black cubes and 13 red cubes. With this information, ...

### Statistics

According to Pew Research, the contact rate (probability of contacting a selected household) in 1997 was 69% and in 2003 was 76%. However, the cooperation rate (proability of someone at the contacted household agreeing to be interviewed) was 58% in 1997 and dropped to 38% in ...

### Statistics

In his management information systems textbook,Professor David Kroenke raises and interesting point:"If 98% of our market has Internet access,do we have a responsibility to provide non-Internet materials to that other 2%?Suppose that 98% of the customers in your market have ...

### Pre-Algebra

So since 2/3 of Spinner 1 is sedans (The 3rd is a truck), and 1/2 of Spinner 2 is purple (the other half is a green), write a multipilcation problem to describe the probability of spinning a purple sedan. Write a problem to describe the probability of spinning a purple truck. ...

### Pre-Algebra

So since 2/3 of Spinner 1 is sedans (The 3rd is a truck), and 1/2 of Spinner 2 is purple (the other half is a green), write a multipilcation problem to describe the probability of spinning a purple sedan. Write a problem to describe the probability of spinning a purple truck. ...

### math-Probablity

Hi, just a few stupid questions about probability. 1. How many different license plates can there be if there is a total of 7 letters (no numbers) (and I'm assuming this has a something to do with permutation. 2. How many different batting line ups can be chosen from a 13 man ...

### M361

A factory worker productivity is normally distributed. worker A produces an average of 84 units per day with a standard deviation of 24. worker B produces at an average rate of 74 units per day with stanard deviation of 25. (a) what is the probability that in any single day ...

### English

Thank you. I corrected errors. 1. I will have taught Spanish for ten years by 2018. 2. I will have taught Spanish for ten years in 2018. (Can we use both prepositions?) 3. Why is he late? He would have overslept. 4. Why is he late? He could have overslept. 5. Why is he late? ...

### Statistics

Please help. Find the probability of getting 2 hearts if the cards are drawn from a regular deck and the first card is not replaced. A true/false quiz consists of twenty questions. If a student answers the twenty questions by making random guesses, what is the probability of ...

### Geometry/Probablity

Of all the Sunny Club members in a particular city, 25% prefer swimming on weekends and 75% prefer swimming on weekdays. 10% of the members in the city prefer swimming on weekends and are female. 55% of the members in the city prefer swimming on weekdays and are female. What ...

### math

A standard deck of cards has had all the face cards (Jacks, queens, and kings) removed so that only the ace through ten of each suit remains. A game is played in which two cards are drawn (without replacement) from this deck and a six-sided die is rolled. For the purpose of ...

### math-independent and dependent events

A card is chosen at a ramdom from a deck of 52 cards.It is then replaced and a second card is chosen.What is the probability of getting a jack and then an eight? getting a jack 4/52. Then getting an eight 4/52 Probability of getting a jack and then an eight, given those are ...

### algebra

Mrs. Stewart has 8 pair of sandals, 6 pairs of pants and 12 t-shirts. While getting ready to go out for ice-cream, she exclaims, "I have nothing to wear!" Mr. Stewart respond by telling her exactly how many different outfits she could wear if each outfit considered of a pair ...

### Statistics

Bart is taking two classes, backpacking and biology. His probability of passing backpacking is 0.54, that of failing biology is 0.83, and that of passing at least one of the two courses is 0.65. Find the probability of the following. A. Joe will pass both courses. B. Joe will ...

### Probablity

Samir had prepared the problem tests for Stages 1 to 5 of Geometry and Combinatorics for next week but forgot to label which test was for which stage. Since Samir didn't label them, the computer assigned them labels 1 through 5 randomly, with each label appearing only once. ...

### Probability

This is an example question, but I'm not sure how my instructor came up with the answer. Could anyone explain in detail please. Among the contestants in a competition are 49 women and 29 men. If 5 winners are randomly selected, what is the probability that they are all men. ...

### math

i would like any help or suggestions you have please as i am very stcuk on these questions thanks here is the scene: each phone call made to the emergency services has probability 0.02 that it is not legitimate. assume that the legitimacy of one call is independant of weather ...