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1. Basing ?ndings on 60 successful pregnancies involving natural birth, an experimenter found that the mean pregnancy term was 274 days, with a standard deviation of 14 days. Construct a 99% con?dence interval for the true mean pregnancy term μ.
2. Let Y be the binomial random variable with parameter p and n = 400. If the observed value of Y is y = 120, ?nd a 95% con?dence interval for p.
a binomial experiment is given. decide whether you can use the normal distribution to approximate the binomial
If θ1 and θ2 are unbiased estimators of θ, show that θ3=k1θ1+ k2θ2 is biased estimator of θ. What condition must be imposed on constants k1 and k2, so that θ3 is an unbiased estimator of θ?
Randomly selected medical resident works more than 100 hours in a week? (c) What is the probability that a randomly selected medical resident works less than 60 hours in a week?
Find would be answer to part(a) if there were only single server which can serve customers twice as fast (i.e, with service rate four customers per hour)?
The definition of a probability model. Illustrate the two parts of the definition with an example selected from the worksheet.
How can you determine if two vectors are dependent or independent and Is division of a vector by another vector defined?
in a recent study of 35 ninth-grade students the mean number of hours per week that they played video games was 16.6.
on a certain anxiety questionnaire the population is known to have a mean of 12 and a standard deviation of 2.3. a
A five-year old study claims that selling prices of new homes / condominiums in the New York area have a normal distribution with mean = $180,000 and standard deviation = $40,000.
What is the probability that more than 585 of this year's entering class of 1807 will drop out during or at the end of their first year?
find the amounts indicated.1. the monthly deposits necessary to accumulate 12000 after 5 years in an account earning
What is correlation analysis? How can correlation analysis be used in a business decision or examples specifically related to strategy formulation and implementation?
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