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To estimate the mean amount spent per customer for dinner at a restaurant, data were collected for a sample of 64 customers. Assume a population standard deviation of $6. At 95% confidence, what is the margin of error?
A woman has a collection of snakes and iguanas. Her young son observed that the reptiles have a total of 50 eyes and 56 feet. How many reptiles of each type does the woman have?
The 7th degree polynomial x^7 - 3x^6 - 7x^4 + 21x^3 - 8x + 24 has a factor (x - 3). Divide x^7 - 3x^6 - 7x^4 + 21x^3 - 8x + 24 by x - 3 and thus:
Provide a brief description of the main features of these data from the scatter plot and Describe why you would use performance as the predictor variable and performane related pay as the dependent variable in such a model.
The weekly salaries of teachers in one state are normally distributed with mean of $490 and standard deviation of $45. Determine the probability that a randomly selected teacher earns more than $525 per week?
In an article appearing in Today's Health a writer states that the average number of calories in a serving of popcorn is 75. To determine if the average number of calories in a serving of popcorn is different from 75
The weekly output of a steel mill is a uniformly distributed random variable that lies between 110 and 175 metric tons. Compute the probability that the steel mill will produce more than 150 metric tons next week.
Analyze the above alternatives with utility function U(x) = 0.0085x - 6.725(ln(x)), where x is total/net wealth: If Nancy has $5,600, which alternative he should choose among A, B or C?
The membership for the club this year isobserved to be 14 freshman, 19 sophomores, 51 Juniors and 16Seniors. At 95% level of confidence, test the advisors belief..
What is the 25th percentile of a chi squared distribution with 20 degrees of freedom? What symbol is used to denote this value?
FINRA is considering three alternatives for providing food services (breakfast and lunch) to its employees: creating a company owned food service and hiring its own staff, hiring an outside vendor to provide food services (outsourcing), or a combi..
Compute mean x and standard deviation s of data above. Calculate Ho by using traditional/classical method.
The mean number of passengers per flight is 160 with a standard deviation of 20. The aircraft used for the route has 200 seats.
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