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Five balls, numbered 1, 2, 3, 4, and 5, are placed in an urn. Two balls are randomly selected from the five, and their numbers noted. Find the probability distribution for the following:
a The largest of the two sampled numbers
b The sum of the two sampled numbers
suppose x has an exponential distribution with mean equal to 10. determine followinga px gt 10b px gt 20c px gt
what additional information is obtained from measurements on an interval scale compared to measurements on an ordinal
In a shipment of 59 vials, only 18 does not have hairline cracks. 6 vials are randomly selected from the shipment. Find the probability that at least one of the 6 selected vials has a hairline crack.
the number of customers at quiet morning bakery is believed to follow a poisson distribution with a mean of 2 customers
A mean score on a standardized test is 50 with a standard deviation of 10. Answer the following
the lifetime of a semiconductor laser has a lognormal distribution and it is known that the mean and standard deviation
a parcel service randomly selected 48 packages it received. the sample has a mean weight of 18.6 pounds. assume that
A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1-hour flight is .02. What is the probability that (a) both will fail? (b) Neither will fail? (2) One or the other ..
The standard deviation of the sample was computed to be 2.1 calls. At the .05 level of significance, can we conclude that more than 40 calls are made on the average in a week?
An insurance company is trying to determine if there is a significant difference in the average number of sick days that registered nurses and nurse practitioners use per year. The data analysis provided the following output.
If 20% of the students entering college drop out before receiving their diplomas, ?nd the probability that out of 20 students picked at random from the very large number of students entering college, less than 3 drop out.
In the following stem-and-leaf display for a set of two-digit integers, the stem is the 10's digit, and each leaf is the 1's digit. What is the original set of data?
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