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If a point is randomly located in an interval (a, b) and if Y denotes the location of the point, then Y is assumed to have a uniform distribution over (a, b). A plant efficiency expert randomly selects a location along a 500 foot assembly line from which to observe the work habits of the workers on the line. what is the probability that the point she selects
a) within 25 feet of the end of the line ?b) within 25 feet of the beginning of the line ?c) closer to the begining of the line than to the end of the line?
Given that he makes first, assume probability that he makes second is 0.60. Given that he misses first, assume probability that he makes second one is 0.40.
54% of men consider themselves professional baseball fans. You randomly select 10 men and ask if he considers himself a fan. Find the probability that the number who consider themselves professional fans is
Enter relative proportions of the 3 samples in order (20,50,30) in "Expected values" area.
The next 20% a B, the next 42% a C, the next 18% a D and the bottom 12% an F. What average must you exceed to obtain an A?
What is the probability that of today's 1,100 callers at least 5 received a busy signal? Use the poisson approximation to the binomial.
In estimating a 95% confidence interval estimate of the average number of days absent for the company's workers last year should you use a z or t value in the formula?
The sample data are summarized by the statistics n = 27, x = 4.6 years, s- 1.9 years.
During the period of time phone-in reservations are being taken at a local university, calls come in at a rate of one every ten minutes.
The following is based on the normal distribution of scores with mean equal to 90 and standard deviation equal to 3.5. Determine the probability of a score falling between a raw score of 84 and 96?
Why are estimations and confidence intervals important? Do confidence intervals and estimation play a role in the selection of sample size?
How would you approach identifying the two correct time series in #1 to the proceed to merge them into one and make a weekly estimate of attendance?
Determine the area under the standard normal curve between z = 0 and z = 3. Determine the area under the standard normal curve to the right of z = 1. Determine the area under the stanard normal curve to the left of z = 1.5
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