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The employees of Cartwright Manufacturing are awarded efficiency ratings. The distribution of the ratings approximates a normal distribution. The mean is 420, the standard deviation 59. What is the area under the normal curve between 420 and 495?
according to a study by the american pet food dealers association 63 percent of u.s. households own pets. a report is
Critically discuss the lower control limit for a proportion defective if the average daily production is 5000 units and the average fraction defective is .02?
a two-variable data set has a correlation coefficient of 0.84. what is the coefficient of determination?a. 0.9165b.
The quality-control inspector of a production plant will reject a batch of syringes if two or more defective syringes are found in a random sample of eight syringes taken from the batch. Assume the batch contains 1% defective syringes.
q1.the average number of pounds of meat that a person consumes each year is 218.4 pounds. let the standard deviation
Define the experiment and describe one sample point. Assume that you need to describe only the two jurors chosen and not the order in which they were selected. List the sample space associated with the experiment.
For the experiment above, let X denote the number of hearts that are drawn. For this random variable, find its expected value and standard deviation.
what is the probability of obtaining at least 6 cases in this class if the nationwide rate holds True?
in a recent survey concerning company sales and net earnings 11 companies responded. data analysis was computed letting
Assuming that both patients are on time, find the expected amount of time that the 1:30 appointment spends in the doctor's office.
how can standardized z-scores be used to compare people across different contexts such as the batting averages of two
in a random sample of 60 refrigerators the mean repair cost was 150.00 and the standard deviation was 15.50. construct
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