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A random group of seniors was selected from a university and asked about their plans for the following year. The school advising office claims that 55% of the students plan to work, 30% of the students plan to continue in school, and 15% of the students plan to take some time off. Is there evidence to reject this hypothesis at alpha= 0.05?
Number of students that plan to: work-18 school-17 time off-10
a company manufacturing cds is working on a new technology. a random sample of 718 internet users were asked as you may
the cardboard bales produced at a local recycling depot have an average weight of 400kg with a standard deviation of
Suppose the annual consumption of chicken mean is 20.84 pounds per person and that the standard deviation for the consumption of chicken per person is 9.193 pounds.
The distributor selects one cable at random from among all cables in stock. If the cable selected is found to meet the strength specifications, what is the probability that the cable was produced at Plant A?
calculate a 90 prediction interval for a randomely selcted single indivdual from the popultation. with a sample mean of
Discuss the null hypothesis. How is it framed? What is the alternate hypothesis? How does it relate to the null hypothesis?
an irate customer called dollar day mail order company 40 times during the last two weeks to see why his order had not
question the police chief in montgomery wants to know if the citys population feels that the police are doing a good
Has the average community level of suspended particles for the month of August exceeded 30u/m3?
if tow televisions are randomly selected, compute the probability that both televisions work. what is the probability that at least one does not work?
given below are seven observations collected in a regression study on two variables x independent variable and y
Consumer Reports published an article on some sport-utility vehicles they had tested recently. They reported some basic information about each of the vehicles and the results of some tests conducted by their staff.
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