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Program: Marketing estimates that a new instrument for the analysis of soil samples will be very successful, moderately successful, or unsuccessful, with probabilities 0.6, 0.6, and 0.1, respectively.
The yearly revenue associated with a very successful, moderately successful, or unsuccessful product is $10 million, $5 million, and $1 million, correspondingly.
Let the random variable X denote the yearly revenue of the product.
Determine the variance of the random variable X.
Provide answer and find the variance of the random variable and please show me all the working.
using the information provided indicate which statistical test you think should be used for each of the following
Years to Complete a Graduate Program: The average number of years a person takes to complete a graduate degree program is 3. The standard deviation is 4 months. Assume the variable is normally distributed. If an individual enrolls in the program, ..
The McCollough Corporation, a producer of various kinds of batteries, has been producing D size batteries with a life expectancy of 87 hours.
1. The counselor calculates the unbiased estimate of the population's variance to be 15. What is the variance of the distribution of means?
according to the u.s. bureau of the census 75 of adults regularly drank alcohol in 1985. an investigator predicts that
in a community 40 of the population is smoker. i randomly choose 60 residents from that community and ask if each of
Merta reports that 74% of its trains are on time. A check of 60 randomly selected trains shows that 38 of them arrived on time. Find the probability that among the 60 trains 38 or fewer arrive on time.
assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of 2275
the mean diameter of a ball bearing produced by a certain manufacturer is 0.80 cm with a standard deviation of 0.03 cm.
Utilizing the chart parameters developed above to define the control charts for future candy bar production, Compute the appropriate plotting points from the data.
after collecting psychological data a regression is performed to relate the depression index to years of formal
a researcher believes that the retail price of new identical automobiles differs between an urban location and a
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