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Find the probability and interpret the results. If convenient, use technology to find the probability. The population mean annual salary for environmental compliance specialists is about $64,500. A random sample of 31 specialists is drawn from this population. What is the probability that the mean salary of the sample is less than $61,500? Assume σe=$6,000.
The probability that the mean salary of the sample is less than $61,500 is. (Round to four decimal places as needed.)
a corporation creates a sinking fund in order to have 980000 to replace some machinery in 9 years. how much should be
compute the mean and variance of the following weights for the population of ferrets on the high plains of
Using Coefficient of Variation determine in which year do the ages show a more dispersed distribution? Show your complete work and support your answer.
A transatlantic plane carries 140 passengers. It is known that the average weight of all passengers on that plane is 147.14 pounds, that the men on that plane weigh on the average 170 pounds, and women 130 pounds. How many men and how many women w..
Can anyone explain? Age so individuals in a certain population are normally distributed with a mean of 55 and standard deviation of 10 years. What age reange would make up the youngest 5% of the population?
the estimate of the population proportion is to be within plus or minus 0.02 with a 90 level of confidence. the best
suppose the average math sat score for all students taking the exam this year is 480 with standard deviation 100.
Finds the average life time for this sample is 970 hour and the standard deviation is 80 hours. Can the firm claim that the average life time is 1000 hours at the 5% level of significance?
a report from the u.s. department of justice reported the percent changes in federal prison populations in 21
Lance produces 20 more than 4 times what Jacob can produce in one day. If Lance's total production for the day is 360, how much does Jacob produce in one day
consider the following frequency distribution for a sample of 40 observationsclass frequency0-4
Draw and find the area under the standard normal curve - Find the indicated z-score and Which normal curve has the greatest mean and standard deviation? And which normal curve has the smallest mean and standard deviation?
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