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Dancing and singing. Refer to the previous exercise. Draw a Venn diagram, similar to given Figure, showing the probabilities for dancing and singing.
Exercise Dancing and singing. Suppose that 70% of college students like to dance, 40% like to sing, and 30% like to dance and sing. Find the probabilities of the following events:
(a) like to dance and don't like to sing
(b) don't like to dance and like to sing
(c) don't like to dance and don't like to sing
(d) for each of parts (a), (b), and (c), state the rule that you used to find your answer.
a fire detection device utilizes three temperature-sensitive cells acting independently in such a manner that any one
Formulate an appropriate hypothesis test to examine at the 10% level of significance whether the manager's worries are justified.
How actually p value represents a distribution pattern whether it is normal or not? u explain the anderson-darling test regarding the normal graph.
a bright idea. a company produces lightbulbs whose life follows the n1500 300 distribution i.e. the lifetimes of
Investment A has an expected return of $25 million and Investment B has an expected return of $5 million. Market risk analysts believe the standard deviation of the return from A is $10 million
In random samples of 25 from each of two normal populations, we found the following statistics: Estimate the difference between the two populations means with 95% confidence.
Assume 1.5% of antennas on new Nokia cell phones are imperfect. For random sample of 200 antennas, determine the probability that: None of the antennas is defective.
suppose x has a continuous uniform distribution over the interval -1 1.a determine the mean variance and standard
Population is know (from a previous large survey) to be $3000 with the standard deviation of $400. Find the 99% confidence interval for the sample mean.
over the last five years in pa. the variance of new home construction costs has been 108000. over the same period of
a simple random sample of 80 widgets is drawn from a manufacturing lot of 400 widgets. the widgets in the sample are
Give a circuit, complete with component values, for a weighted summer that shifts the dc level of a sine-wave signal of 3 sin(ωt) V from zero to -3 V. Assume that in addition to the sine-wave signal you have a dc reference voltage of 1.5 V availab..
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