2. According to the recent surveys, 30% of the households have internet access. If a random sample of 350 households is selected, what is the probability that greater than 117 have internet access? Solution: = bu

Q: At one private college, 34% of students are business majors. Suppose that 260 students are randomly…

A: The probability that the proportion of business students in the sample differs from the population…

Q: (a) If a random sample of 50 one-bedroom apartments is selected, what is the probability that the…

A:

Q: Thirty percent of students in a college are Freshmen. In a random sample of 15 students form the…

A:

Q: In a dental study on children it was found that the probability of the child population having any…

A: P(C) = p = 2/3 P(Not C) = q = 1-p= 1/3

Q: Carson has a 30% chance of beating his brother in a race. If they raise 10 times, what is the…

A: (n C r) prqn-r

Q: A pharmaceutical company knows that approximately 8% of its birth-control pills have an ingredient…

A:

Q: If the firm stated that 30% would buy if contacted at home. What is the probability of the sales…

A:

Q: Find the probability of getting five multiple-choice question answered correctly, if for each…

A: The probability of getting 5 MCQ answers correctly is equal to  P(X=5) =? The probability of…

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A:

Q: In a class of 6 girls and 5 boys, what is the probability of having girls and boys seated…

A: The provided information is  6 Girls 5 Boys  The arrangement is Girls on first seat and girls on the…

Q: What is the probability that a randomly selected elephant will have a weight that is at most 6.42…

A: Given Average =6.42 Standard deviation=1.07

Q: The proportion of eligible voters in the next election who will vote for the incumbent is assumed to…

A: Given: The probability of eligible voters in the next election who will vote for the incumbent is…

Q: The probability that a cask contains more than 261 liters of whiskey is If there are 9 casks of…

A: Let X denote the volum of whiskey in a cask. Given that X follows Uniform(a = 258.5, b = 261.5).…

Q: What is the probability of getting a straight or one pair?

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Q: In a factory that produces pieces of ready-made concrete, if the ratio of production of defective…

A:

Q: d. What is the probability that more than 4 of them know HelpYourMath YouTube Channel? e. What is…

A:

Q: A team’s wins and losses are analyzed as a binomial experiment with p as the probability of success…

A: A random variable x will follow the binomial distribution if the following conditions are satisfied.…

Q: Q2: Suppose that after 10 years of service, 40% of computers have problems with motherboards, 30%…

A: Percentage of motherboard problem is 40%. Percentage of hard disc problem is 30%. Percentage of both…

Q: Find the probability of randomly selecting 3 students from Utah out of a group of 12 students, 5 of…

A:

Q: A salesperson knows that over the course of her career she has a 20 per cent chance of making a sale…

A: We have to find probability..

Q: Use R to simulate the probability of getting at least one 8 in the sum of two dice rolls. -The…

A: *Answer:

Q: The probability of success in the C.A. examination is 20%. If 20 batches of 5 students each take the…

A:

Q: out of 80 births in a local hospital estimate the probability of girls born is between 32 girls and…

A: Continuity correction factor table: If   P(X=n) use   P(n – 0.5 < X < n + 0.5)If   P(X > n)…

Q: 2 The probability of failure in Physics practical examination is 20%. If 25 batches of 6 students…

A:

Q: 4. The percentage of Metro Manila households that have air conditioning unit is 16%. In a random…

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Q: Suppose that the true proportion of households with at least one car is T = .80. If a random sample…

A: Assume that π as the true proportion of households with at least one car.

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A: Final Score of math exam is normally distributed with mean 73 and standard deviation 7.8 X : Final…

Q: The percentage of the damaged production of a lamp factory is 1000. If a sample of 5 lamps is…

A:

Q: A salesperson found that there was a 1% chance of a sale from her phone solicitations. Find the…

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Q: Out of 800 families with four children each, what percentage would be expected to have no girls?…

A: Given that, Out of 800 families with four children each and  boys and girls are equally likely to…

Q: hilitu of cuccers n035 and n=5 trials is conducted, What is the probability that the experiment…

A: It is given that n=5 and p=0.35.

Q: 1) The number of cracks in a 105-km expressway is 30. What is the probability that there would be no…

A: Solution.

Q: In the winter, guests who visit Yosemite National Park like to stay at an overnight lodge in the…

A: Given that, Probability = 0.57 Sample size, n = 6

Q: Suppose the probability of success is p=31%. What is the probability of 7 successes in 8 trials?

A: Let x follows binomial distribution with parameters n = 8 and p = 0.31   The pdf of binomial…

Q: In a small private​ school, 3 students are randomly selected from 19available students. What is the…

A: We have to find total ways to pick 3 students from 19 students I. e 19C319C3= (19 * 18 * 17) / (3 *…

Q: 8. Find the probability of getting a total score of 15 points in a throw of three identical dice.

A: To find the probability of getting a total score of 15 points in a throw of three identical dice.

Q: In a factory that produces blocks of ready- made concrete, if the percentage of production of…

A: Given data,Sample size n=5Percentage of production of defective blocks is p=0.6Let X be event that…

Q: What is the probability that Z is less than 1.53 or greater than 1.84​?

A: Required probability is P(Z<1.53 or Z>1.84)

Q: A (blindfolded) marksman finds that on the average he hits the target 4 times out of 5. If he fires…

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Q: a) What is the probability of selecting students whose IQ ranges between 110 and 127? b) If you will…

A: The IQs of 100 students are normally distributed with a mean of 115 and a standard. deviation of 10.…

Q: 3. The ratio to the probabilities of 3 successes and 2 successes among 5 independent trials 3 Find…

A: Let us consider the no. of success to be denoted by X, which follows binomial distribution i.e. X…

Q: In the winter, guests who visit Yosemite National Park like to stay at an overnight lodge in the…

A: From the provided information, Guests who visit Yosemite National Park like to stay at an overnight…

Q: n the winter, guests who visit Yosemite National Park like to stay at an overnight lodge in the park…

A: Let the random variable X denote the no. of guests who visit Yosemite National Park like to stay at…

Q: Based on data from the Center for Statistics, 30% of adult Americans smoke. Ina sample of 12 adults:…

A: Note: As per Bartleby’s guideline for more than three subparts of a questions only first is to be…

Q: What is the probability that there would be no cracks in a particular 3-km section of the…

A: Let, X be the number of cracks in a 105-km expressway. Here , X has Poisson distribution with mean…

Q: Out of 320 families with 5 children -each, what percentage would be expected to 11ave (i) 2 boys and…

A: Given ,N=320and 320 families have 5 children each .  P(having a boy)=12P(having a girl)=12

Q: Suppose 42% of the banks in Switzerland are private organizations.   If a sample of 442 banks is…

A: It is known that, the mean of the sampling distribution of p-hat is equal to the population…

Q: If the weight (in grams) of cereal in a box of Lucky Charms is N(485,3), what is the probability…

A:

Q: According to a study done at Otago University Wellington, the probability a randomly selected…

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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.