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(a) The spokesperson from the Weather Forecast Department, Ministry of science and Technology asserts that more than 72% of factories at the prime industrial area meet the antipollution standards. An antipollution advocate wants to validate the above statement. He then takes sample of published data from 100 factories randomly selected from the same industrial area, and finds that 75 of them meet the antipollution standards. Test at the 5% level of significance.
(b) Minister of education wants to know how serious is the lack of nutrition among school children. A sample of 200 school children sampled showed that 50 of them lack in nutrition. Construct a 95% confidence interval for the proportion of all school children who lack nutrition.
the manager of a grocery store wants to determine what proportion of people who enter his store are his regular
What is the dilution factor for 2mM of KMnO4 in serial dilution to make 6 mL of each of the following 1.0mM, .5mM, 250 micromilli
of the 89 people who answered yes to a question 8 were male. of the 43 people who answered no to the question 5 were
What is the probability that at least four of the six will give up in the first two weeks?
What proportion of eligible voters were Mexican Americans? Let this value be po. (Round your answer to four decimal places.)_________
Just as it is a mistake for marketers to consider the U.S. population a homogeneous group with the same values and culture, it is also a mistake for marketers to assume that all Hispanic consumers fit into the same subculture or have similar buyin..
Convert them into valid standard-form syllogisms.- The Constitution bans any law that is so vague that "men of common intelligence must necessarily guess at its meaning."
For the observations.- verify that the sample mean, 20% trimmed mean, and median are X¯ = 33.33, X¯ t = 32.9, and M = 35.
What is the probability that there is at least one parking place available for the 11:00 am class?
Assuming that 6 of the 100TVs in the current lot are defective find the probability that exactly 2 of the 5TVs selected by the engineer are defective.
The mean was 56 and the standard deviation was 20. On the second exam, she scored 82; the mean was 74 and the standard deviation was 5. On which exam did she do better?
Discuss carefully the assumptions that you are making in carrying out this test.
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