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Consider a roulette wheel with 18 red, 18 black, and 2 green spaces. If we only consider 1 spin, the conditional probability that it lands on red - given that it does not land on black is?
A) 0.10
B) 0.375
C) 0.50
D) 0.90
A random sample of 500 participants was recruited for the study ? Subjects were allowed to elect to participate in an 3-month exercise program or serve as a control subject (190 chose the program, 310 chose to serve as controls)?
for a standard normal curve find the z-score that separates the bottom 90 from the top
Estimate the true mean tensile strength of bars of this size and tyoe using 90% confidence interval. List any assumptions you need to make. Given n=150, x(bar)=477N/mm^2, and s=13.
Compute the Relative risk (RR) of ADR with Drug A compared to Drug B. Show all calculation. Interpret the RR value. Do you arrive at the same conclusion based on the OR estimate and RR?
We have a deck of 52 playing cards. What is the probability of drawing?
Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be sent by 2-day mail instead. Exceptions are allowed, but they want the average to be 10 or below.
Find a 99% confidence interval for mu1-mu2, the difference in population means when it is known in advance that the population variances are 4 and 5 respectively.
A survey of autos parked in student and staff lots at a large university classified the brands by country of origin, as seen in the table: Given that the car is Europena, what proportion of the drivers are staff?
Bulloch County has never allowed liquor to be sold in restaurants. However in 3 months, county residents are scheduled to vote on a referendum to allow liquor to be sold by the drink.
For an examination in which grades of 70 and 88 correspond to standard scores of -0.6 and 1.4 respectively. Find:
Critically discuss why you would or would not expect each of the following variables to be normally distributed.
a basketball team has 5 players more than 6 feet tall and 6 who are less than 6 feet tell. how many ways can they have
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