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Question 1:
A mail-order firm has a circular which elicits a 10% response rate. Suppose 20 of the circulars are mailed as a market test in a new geographic area. Assuming that the 10% response rate is applicable in the new area, determine the probability that
(i) no one responds,
(ii) exactly two people respond,
(iii) less than 20% of the people respond.
Question 2:
The packaging process in a breakfast cereal company has been adjusted so that an average of 13.0 oz of cereal is placed in each package. Of course, not all packages have precisely 13.0 oz because of random sources of variability. The standard deviation of the actual net weight is 0.1 oz and the distribution of weights is known to follow the normal probability distribution.
(i) What is the probability that the weight of the cereal will exceed 13.25 oz?
(ii) Evaluate the probability that a randomly chosen package will contain between 13.0 and 13.2 oz of cereal.
A scientist claims that the mean incubation period for the eggs of a species of birds is more than 46 days.
The specification for a plastic handle calls for a length of 6.0 inches ± 0.5 inches (5.5 to 6.5 inches). The process is known to operate at a mean thickness of 6.1 inches. The mi
i have data points of the form (x,y) of a cluster... I want to find variance nad standard deviation of this so dat i can decide which is a good cluster... so let me know how to do
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A company prepares dinners for several airlines, and sales average 300,000 meals per month. The significant costs of each dinner prepared are for the meat, veg,plastic trays, and u
EIGHT definition of statistics and their scholars
Accounting system is one prevalent among agencies in voluntary sector. Transactions are registered in journals only when cash is in fact paid out or taken in. The primary virtue of
#definition
Following is the trend equation for a time series data on a monthly basis for years 2007 to 2009: Y=2.375+0.895X. Find Y for 2nd quarter of 2010.
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