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100 people are given a standard antibiotic to treat an infection and another 100 are given a new antibiotic. In the ?rst group, 90 people recover; in the second group, 85 people recover. Let p1 be the probability of recovery under the standard treatment and let p2 be the probability of recovery under the new treatment. We are interested in estimating θ = p1 - p2. Provide an estimate, standard error, an 80 percent con?dence interval, and a 95 percent con?dence interval for θ.
there are twelve zodiac signs and each person is born under exactly one sign. suppose that each sign is equally likely
let x be a random variable that represents the monthly electric bills in a certain city. data shows that x is
an aircraft has 211 seats. when someone buys a ticket for a flight there is a .0741 probability that the person will
Do the data indicate that the sleeping pill is effective at a 1% level of significance?
Fizz fizz soda comes in two varieties, regular and diet. If a researcher has 8 boxes of each, how many ways can he select 2 boxes of each for a quality control test? Which answer would be correct?
Health and Nutrition Examination Survey, suppose that weights of men now are normally distributed with mean of m =172 pounds and standard deviation of s = 29 pounds.
a company believes it has a 40 chance of being successful on bidding a contract that yields a profit of 30000. assume
In the graphical method, how do you know when a problem is infeasible, unbounded, or when it has multiple optimal solutions? Give a real-world example of when you could have an infeasible problem.
Testing for Population mean - Based on this sample evidence, is Joan's supervisor correct? Use a = .05.
customers at a gas station pay with a credit card a debit card b or cash c. assume that successive customers make
a testing organization reported that 5 of their scores are under 450 while 40 of their scores exceed 1085. assume that
The number of traffic accidents that occurs on particular stretch roas during a month follows a Poisson distribution with mean of 8.5. Find the probability of observing exactly three accidents of this stretch of road next month.
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