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A certain cross between sweet-pea plants will produce progeny that are either purple owered or white owered; the probability of a purple-owered plant is p =9/16. Suppose n progeny are to be examined, and let P^ be the sample proportion of purple-owered plants. It might happen, by chance, P^ that would be closer to 1/2 than to 9/16. Find the probability that this misleading event would occur if:
(a) n = 1
(b) n = 64
(c) n = 320
The ages of cars owned by all employees of a large company have a bell shaped distribution with a mean of 8 years and a standard deviation of 2 years. Using the empirical rule, find the approx. percentage of cars (owned by those employees) that are b..
Determine x-bar and s for this data set. You may suppose the values for bulb life are normally distributed. Use traditional method to make your decision.
Assume that a hand of 12 cards is dealt from a normal deck of 52 playing cards. What is the probability that of the 12 cards, 3 will be diamonds, 3 will be clubs, 3 will be spades, and 3 will be hearts.
Conduct the following test using 95% level of confidence.
Compute standard error of mean? Compute the margin of error, with 95% confidence.
Select the level of significance, and determine critical, ZCR value.
The p-value for a test statistic is .085, what is the minimum level of significance required to reject the null hypothesis?
Leggo's pesto is make from a recipe brought to America by an immigrant ancestor the present generation refers to as Bisnonna Maria.
Construct a grouped frequency distribution using six classes.
Assume that the following four examines were tested as part of a large group that had a normally curved distribution.
The quality-control inspector checks 200 pieces in a certain operation. The piece is either good or defective. The record for nine hours.
Let X be the number of yes votes obtained from a random sample of 200 out of the entire voting population. What is the expected value of X if, in fact, 65% of all voters supported the dictator?
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