The probability of picking a red marble in a bag of 32 is 1/4. how many red marbles should be added to increase the probability to 1/3.

Q: The survival rate during a risky operation for patients with no other hope of survival is 82%. What…

A: From the provided information, Survival rate = 82% that is p = 0.82 Sample size (n) = 5 The process…

Q: The average number of cockroaches per hectares in a 7-hectares wheat field is estimated to be 11.…

A: Let , X be the number number of cockroaches per hectares in a 7-hectares Here , X has Poisson…

Q: The probability that Mark will pass his statistics test is 0.65. Find the probability that he will…

A:

Q: For the experiment of tossing a six-sided die twice, find the probability that the sum is at least…

A:

Q: A professional basketball player makes 85% of the free throws he tries. Assuming this percentage…

A: Ans: Given P = 85%  = 0.85          n = 8   and  x = 8      Find  P( X = 8) =?

Q: Every morning Sheldon pesters his friends to give him a lift to work. The probability that he will…

A: Given  p= 0.7 n  = 5

Q: At your high school, the probability that a student takes Marketing and Spanish is 0.062. The…

A: Let PS be the probability of student taking Spanish. Let PM be the probability of student taking…

Q: The probability that an iPOD’s battery will need replacing within two years is 21%. A store sold 15…

A:

Q: A coin rushes 10 times. What are the chances of 3 to 6 rounds?

A: The problem explains us that a coin rushes 10 ,now we have to calculate the chances of 3 to 6…

Q: The lacrosse team has a 55% chance of winning its upcoming games. Find the probability of them…

A:

Q: On New Year’s Eve, the probability of a person driving while intoxicated or having a driving…

A: Given that, the probability of a person driving while intoxicated or having a driving accident is…

Q: The probability of a student who wants to become a pilot to pass the written exam for private pilot…

A: We have to find given probability.

Q: From the sugar bagging area, a conveyor belt conveys bagged sugar to the warehouse at an average of…

A: The probability density function of poisson distribution is given by

Q: Use all of the data from the “Race or Ethnic Group of Mother” table to find the probability that a…

A: Obtain the probability that a baby born in California would be a girl.   The probability that a baby…

Q: A poll showed that 50.9% of Americans say they believe that some psychics can help solve murder…

A:

Q: d. For the 35 people, find the probability that the average age that they learned to walk is between…

A: here given ,  Suppose the age that children learn to walk is normally distributed with mean 11…

Q: The probability is 0.6. 10 shots, what is the probability that she makes exactly 7 of them? Round to…

A: It is given that the probability of making a shot is 0.60. Assuming that shots are independent, the…

Q: A die is loaded in such a way that the probability of each face turning up is proportional to the…

A: The probability of each face turning up is proportional to the number of dots on that face so, The…

Q: If a probability of something happening is 1 how to convert that into percentage and find it's z…

A: We have given that,  If a probability of something happening is 1 how to convert that into…

Q: The amount of time a customer spends in a convenience store can be modeled by an exponential…

A:

Q: The number of telephone calls coming into Grace Floral Shop to place orders averages 3 per minute.…

A:

Q: The probability of flipping a coin and having it land on heads is 1/2.   If a coin is tossed 4…

A: The number of coins flipped is 1. The probability of getting head is

Q: Find the probability that a phone call will last no more than 1.5 min.

A: Since , the probability density function is given by , Our aim is to find the probability that a…

Q: A dice is rolled 2 times. What is the probability of showing a 6 on every roll?

A: When a die is rolled there are 6 possible outcomes that is 1,2,3,4,5,6. Similarly the dice is rolled…

Q: The driving time between Toronto and North Bay is found to range evenly between 195 and 240 mins. a.…

A: The given distribution is uniform distribution. X~U(a=195,b=240) Then, a. P(driving time≤210)=?The…

Q: A machine gun shoots for 3 seconds at the rate of 2400 bullets/minute. The probability of a bullet…

A:

Q: The probability is 0.275 that the gestation period of a woman will exceed 9 months. In 2000 human…

A:

Q: Find the probability that the height is less than 154 cm ?

A: HERE GIVEN, MEAN = 162 CM STANDARD DEVIATION = 32 CM HERE USE STANDARD NORMAL TABLE FOR PROBABILITY…

Q: A jar contains four times as many red marbles as blue marbles. What is the probability of drawing a…

A: Consider that there is total x blue marbles in the jar.

Q: The experimental probability that Morgan will randomly select a penny from a bag of coins is 19100.…

A: Given that

Q: Abigail needs to create a four-digit password to access her voice mail. She can repeat some of the…

A:

Q: An umbrella seller can earn 750 TL every day if the weather is rainy, and lose 100 TL if it is open.…

A:

Q: The time taken by brake discs to overheat on construction equipment is normally distributed with…

A: X be time taken by brake discs to overheat on construction equipment. and X has normally…

Q: The number of chocolate chips in an​ 18-ounce bag of chocolate chip cookies is normally distributed…

A: Let the random variable Y represent the number of chocolate chips in a randomly selected bag.The…

Q: The probability of a man hitting a target is 4. How many times must he fire so that the probability…

A:

Q: The probability of a man hitting a target is How many times must he fire so that the probability of…

A: Let , X be the number of fires to hit the target. Here , X→B(n , p=1/4) The probability mass…

Q: Find the probability of getting a number less than 5 in a single throw of a die.

A: Solution: 1. Suppose a die is thrown. Then, the sample space is

Q: The probability of a number cube landing on 5 is 1/6.  If a number cube is tossed 72  times, how…

A: Given that: n=the number of trials=72 p=probability of landing on 5= 1/6   Each toss is independent…

Q: An average number of phone calls to the station is 1 for 12 minutes. Find the probability that…

A:

Q: The probability of buying a movie ticket with a popcorn coupon is 0.608. If you buy 10 movie…

A: Given data, p=0.608 n=10 P(X>=3)=? P(X>=3)=1- P(X<=2)

Q: The time taken by brake discs to overheat on construction equipment is normally distributed with…

A: Answer - The time taken by brake discs to overheat on construction equipment is…

Q: In a new fiber-optic communication system, transmission errors occur at the rate of 2.5 per ten…

A: Obtain the probability that more than five errors will occur during the next minute.   The…

Q: The probability that Luis will pass his statistics test is 0.65. Find the probability that he will…

A:

Q: A basketball player estimates that he makes 58 % of the free throws he takes. If he takes 15 shots,…

A: Number of combination for choosing r out of n is nCr=n!r! (n-1)! we have given that player makes 58%…

Q: Find P(X<2), that is, find the probability of obtaining less than 2 heads. You can round your answer…

A:

Q: The probability that a man hitting a target is 0.10. If he fires 5 times what is the probability of…

A: Given data, n=5 p=0.10 P(X≥1)=?

Q: A poll showed that 55.5% of Americans say they believe that some psychics can help solve murder…

A:

Q: The probability that a man hitting a target is 0.10. If he fires 5 times what is the probability of…

A: Since, you have asked multiple question, we will solve the first question for you. If you want any…

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.