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During the past six months, 73.2% of US households purchased sugar. Assume that these expenditures are approximately normally distributed with a mean of $8.22 and a standard deviation of $1.10. What proportion of the households spent between $5.00 and $9.00?
Distribution showing the advertising expenditures for 60 manufacturing companies located in the Southwest. Estimate the mean and the standard deviation of advertising expense.
if tow televisions are randomly selected, compute the probability that both televisions work. what is the probability that at least one does not work?
People assigned to assemble circuit boards for a computer manufacturing company under go on the job training. From past experience it was found that the learning curve for the average employee is given by:
What is the z score for a cd player will break down during the guarantee period of 2 years? The statement that the cd player breaks during the 2-year.
the ages of 32 people who signed up for a one year membership at gym last month are shown in the table below.
Below are one hundred pseudorandom numbers from a uniform pdf. Set up and test the appropriate goodness-of-fit hypothesis. Let α = 0.05.
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?
As a manager, what are some benefits of applying probability concepts to solve business-related problems? Would business decisions suffer without probability concepts? Explain.
solve the following standard normal probabilities to five decimalsa. pz gt 0.68b. pz gt -1.56c. pzd. p-1.22e. p2.78 gt
Using a test, 80% of Down's Sydrome cases can be identified, while 5% of normals are detected as positive. What is the sensitivity and specificity of the test?
the volumes of soda in quart soda bottles are normally distributed with a mean of 32 oz. and a standard deviation of
Find the probability of a type I error α if the true proportion is p=0.6.
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