If the percentage of sulfate-resistant concrete pieces in one of the factories is 25%, how many pieces are required to be withdrawn so that the probability of having at least one piece resistant to sulfate is 90%?

Q: Suppose the average number of zebra seen on a 2-day safari is 5. What is the probability that…

A: Given that the average number of zebra seen on a 2-day safari is 5. So, the average number of zebra…

Q: If a seed is planted, it has a 95% chance of growing into a healthy plant. If 12 seeds are planted,…

A: Sample size, n = 12 Probability(grow) = 95% = 0.95

Q: When Susan and Jessica play a card game, Susan wins 60% of the time. If they play 9 games, what is…

A: We will use binomial distribution for this problem For every trial  For Jessica ;  probability for…

Q: (a) One prominent physician claims that 70% of those with lung cancer are chain smokers. If his…

A: Given information: P(Chain smokers) = 0.70 n = 12 Determine the required probability using the…

Q: If the probability of a machine producing a defective part is 0.05, what is the probability of…

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Q: If the average number of visitors to a bank is six people per minute, then the probability of two…

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Q: The incidence of tuberculosis in an industry is such that the workers have a 20% chance of suffering…

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Q: A mail-order company receives an average of 5 orders per 500 solicitations. If it sends out 100…

A: Hello! As you have posted 2 different questions, we are answering the first question (a). In case…

Q: If a seed is planted, it has a 60% chance of growing into a healthy plant. If 12 seeds are planted,…

A: 60% chance of growing into a healthy plant i.e. Probability(grow) = 0.60 Probability(doesn't grow) =…

Q: A pair of dice is rolled 10 times. What is the probability of getting exactly 6 rolls of 8?

A: Solution-: A pair of dice is rolled 10 times. What is the probability of getting exactly 6 rolls of…

Q: You roll a single dice two times. What is the probability of rolling zero even numbers?

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Q: If a seed is planted, it has a 70% chance of growing into a healthy plant. If 8 seeds are planted,…

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Q: If a seed is planted, it has a 75% chance of growing into a healthy plant. If 6 seeds are planted,…

A: Let X= the number of seeds that grow into a healthy plant n=number of trials=6 p=probability of…

Q: A company manufactures calculators in batches of 64 and there is a 4% rate of defects. Find the…

A: Givensample size(n)=64p=0.04Let "x" be the no.of defects in a batchx~Binomial(n=64 ,…

Q: Suppose the influenza vaccine this year is 88% effective to prevent the flu among high-risk…

A: Probability, p = 88% = 0.88Sample size = 25

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

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Q: The average number of diesel tankers arriving each day at a certain port city is known to be 5. What…

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Q: A mobile operator company has to deal with 12 site down issues per hour. What is the probability…

A: Answer :

Q: A study of an ant colony over a certain area showed an average of 1 infected ant per 20,000 ants. If…

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Q: Thirteen percent of adults are left-handed. In a group of 30 adults, find the probability of finding…

A: Given, The probability that the adults are left handed is p=0.13 (13%) n=30 Let X be the random…

Q: On average, Connor has noticed that 7 trains pass by his house daily (24 hours) on nearby train…

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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: If you roll a die twice, what is the probability that you get two sixes in a row?

A: Obtain the probability that you get two sixes in a row. The probability that you get two sixes in a…

Q: If a seed is planted, it has a 65% chance of growing into a healthy plant. If 12 seeds are planted,…

A: From the provided information, Chance of growing a seed into healthy plant = 65% That is p = 0.65…

Q: A dice is rolled twice. What is the probability of showing an even number on both the dice?

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Q: It is known that 10% of adults can pass a fitness test. What is the probability at most 12 adults in…

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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: On a certain stretch of the East Coast Expressway, on average three birds per week are killed…

A: As per guidelines we will solve the first question only, please repost other questions for more…

Q: If the probability that an individual will suffer a bad reaction from injection of a given serum is…

A: Given that the probability that an individual will suffer a bad reaction from injection of a given…

Q: A certain pack of collectible baseball cards has a 20% chance of containing an autographed baseball…

A: Obtain the probability that Jin will get his first autographed baseball card on the 5th pack that…

Q: On an average, there are 2 visits to a supershop per minute. What is the probability that the…

A: Givenon average 2 visits to a supershop per…

Q: If a seed is planted, it has a 65% chance of growing into a healthy plant. If 6 seeds are planted,…

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

A: We have to find given probability....

Q: A pharmaceutical company knows that approximately 5% of its birth- control pills have an ingredient…

A: Given: Sample size, n=200 Probability of ineffective pills, p= 0.05

Q: The average number of emergency calls that an ambulance service gets per day is 5. What is the…

A: The average number of emergency calls that an ambulance service gets per day is 5. What is the…

Q: If a seed is planted, it has a 95% chance of growing into a healthy plant. If 11 seeds are planted,…

A:

Q: If a seed is planted, it has 75% chance of growing into healthy plant. If 12 seeds are planted,…

A: Given that, 75% chance of growing into healthy plant.  Sample size = 12

Q: A mail-order company receives an average of 7 orders per 350 solicitations. If it sends out 50…

A: A mail-order company receives an average of 7 orders per 350 solicitations. p= 7/350= 0.02

Q: If a coin is tossed 4040 times and heads and tails are equally likely, then the probability of…

A: Given: n =4040 To determine: P(x≥2040)

Q: If a seed is planted, it has a 60% chance of growing into a healthy plant. If 9 seeds are planted,…

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Q: A quarterback completed 60 percent of his passes one season. Assuming he is as good a quarterback…

A: According our policy we can answer only first question for remaining please repost the question.

Q: A project has a 60% of super success earning $50,000, a 15% chance of mediocre success earning…

A: The EMV of the project is the Expected Money Value of the Project.This value is given by the sum of…

Q: Out of 320 families with 5 children each, what percentage would be expected to have () 2 boys and 3…

A: Here Given  Total Number of family=N=320 Now Probability of Boys=Probability of girl=0.5 Number of…

Q: If (the average number of mice / dunums) in a corn field consisting of 50 dunums is 10, Calculate…

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Q: If a seed is planted, it has a 90% chance of growing into a healthy plant. If 7 seeds are planted,…

A: The Binomial probability distribution is: PX=x=nxpx1-pn-x In the formula, n denotes the number of…