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Assume that customers enter a store at the rate of 60 persons per hour. a) what is the probability that during 5 minutes interval no one will enter the store? b) what time interval is such that the probability is 0.5 that no one will enter the store during that interval?
A population of 1000 students spends an average of $10.50 a day on dinner. The standard deviation of the expenditure is $3. A simple random sample of 64 students is taken.
A post office has a single line for customers waiting for the next available postal clerk. There are two postal clerks who work at the same rate.
Describe the kinds of statistical software that are available to healthcare professionals.
For the following scores, find the (A) mean, (B) median, (C) sum of squared deviation (d) variance, and (e) standard deviation:
The maximum allowable payback and discounted payback statistic for the project are 2 and 2.5 years, respectively. Use the NPV decision rule to evaluate this project; should it be accepted or rejected?
Assuming the nurses surveyed were a simple random sample from the population of all nurses in the United States, find the appropriate null hypothesis for these data
Develop 3 regression models to forecast selling price based upon each of other factors individually. Which of these is best?
A sample of students attending Southeast Florida University is asked the number of social activities in which they participated last week. The chart below was prepared from the sample data.
If these answers were combined into single statistic, how could we explain sample space? Mention how many elements are in sample space?
Suppose that we generate a random sample from a given dis- tribution. If it is desired that the probability that the sample mean will be within 2 standard deviations of the mean of the distribution is at least .99, how large should the sample size..
A wildlife biologist captures a certain species of geese in orer to weigh them. Using science, he determines that the weights are normally distributed with a mean of nine pounds and a standard deviation of 1.3 pounds.
A standard deviation of $1500. at the 0.01 level of significance, can it be concluded that state employees earn on average less than federal employees?
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