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The mean errors per page made by a clerk in the word processing pool for a large company is thought to be 2.4 with the numbers of errors distributed according to a poisson distribution. what is the probability that more than 2 errors will be observed?
Make a scatter diagram of the scores; (b) describe in words the general pattern of correlation, if any (c) figure the correlation coefficient; (d) figure whether the correlation is statistically significant.
Use the sample results with a 0.05 significance level to test the claim that pulse rates of men have a standard deviation greater than 10 beats per minute.
The mean lifetime of light bulbs made by this manufacturer differs from 55 months? Can we conclude that the mean lifetime of light bulbs made here differs from 55 months?
A study of 36 members of the Central Park Walkers showed that they could walk at an average rate of 2.6 miles per hour. The sample standard deviation is 0.4. Find the 95% confidence interval for the mean for all walkers.
An insurance company is reviewing its current policy rates. When originally setting the rates they believed that the average claim amount was $1,800.
You are taking a multiple-choice quiz that consist of 7 questions. find the probability of guessing exactly four answers correctly.
At your place of employment, 100 employees are randomly selected and asked the distance of their communte to work. From this group a mean of 15.2 is computed. Identify the following as either?
Births. Randomly selected births records were obtained and results are listed in the table below (based on data from the National Vital statistics Report,
How many gears should be produced in each run at what minimum cost and what is the cycle time?
Suppose that these 49 patients constitute the random sample, and that population is normally distributed with standard deviation of 10. Calculate the 95% confidence interval for heartbeats per minutes in population.
What is the role of probability concepts in business decision making? Define probability concepts.
Determine the class with the greatest number of data values.
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