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Weights of certain monkeys are distributed with a mean of 44.1 pounds and a standard deviation of 3.9 pounds. What is the probability that a randomly selected monkey will:
A) Weigh at least 40 pounds.
B) Weigh less than 35 pounds or more than 55 pounds.
A certain medication is known to increase the pulse rate of its users. The standard deviation of the pulse rate is know to be 4 beats per minute. A sample of 40 users had an average pulse rate of 98 beats per minute. Find the 95% confidence interv..
it is thought that prehistoric indians did not take their best tools pottery and household items when they visited
a precision instrument is guaranteed to read accurately to within 2 units. a sample of four instrument readings on the
From experience he knows that he can go another 15 miles. What is the probability that he will be stranded on the highway without gasoline?
a normal population has m 50 and s 8. a random sample of n 4 scores from this population has a mean of 54. what is
Carry out the suitable calculations to test for effect modification. Interpret your results.
Person repeatedly and independent flips the fair coin to decide whether to take the step to left or to right from a point X. Find out expected number of times person returns to X.
a sanitation department is interested in estimating the mean amount of garbage per bin for all bins in the city. in a
Connect the successive points by line segments to help see the pattern. Are there systematic effects of time remaining after we regress consumption on price?
A company has just manufactured 1295 CDs, and 492 are defective. If 10 of the CD's are randomly selected for testing, what is the probability of the entire batch will be accepted
what is the probability of selecting a sample mean of 7 or less , with a sample population of 9 and mean of 10 and a standard deviation of 3.
A sample of charge accounts at a local drug store revealed the following frequency distribution of unpaid balances. Determine the standard deviation. Compute the coefficient of variation.
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