A new drug is designed to reduce a person's blood pressure. Thirteen randomly selected hypertensive patients receive the new drug. Suppose the probability that a hypertensive patient's blood pressure drops if he or she is untreated is 0.5. Then what is the probability of observing  more than 11 blood pressure drops in a random sample of 13 treated patients if the new drug is in fact ineffective in reducing blood pressure?

Q: The New York Times reported that 70% of adults know someone who has been exposed to coronavirus.…

A: Givenp=0.70n=20Let "x"be someone who has been exposed…

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A:

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

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A: Here, n = 1000, p = 0.15.

Q: In a recent year, about 37% of all infants born in a country were conceived through in-vitro…

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A: Given,n=6p=0.4q=1-0.4=0.6A random variable X~Binomial(n=6 , p=0.4)P(X=x)=6x0.4x0.66-x   ;…

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Q: A certain group of symptom-free women between the ages of 40 and 50 are randomly selected to…

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A:

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

A: Obtain the probability that at least 3 of the people will not cover their mouth when they sneeze.…