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Question: Cigarettes 2006. In 1999 the Centers for Disease Control and Prevention estimated that about 34.8% of high school students smoked cigarettes. They established a national health goal of reducing that figure to 16% by the year 2010. To that end, they hoped to achieve a reduction to 20% by 2006. In 2006 they released a research study in which 23% of a random sample of 1815 high school students said they were current smokers. Is this evidence that progress toward the goal is off track?
a) Write appropriate hypotheses.
b) Verify that the appropriate assumptions are satisfied.
c) Find the P-value of this test.
d) Explain what the P-value means in this context.
e) State an appropriate conclusion.
f) Of course, your conclusion may be incorrect. If so, which kind of error did you commit?
For a particular plant hybrid, the flowers of any given plant have a 75% chance of being red. (a) What is the probability that in 8 plants, exactly 6 have red flowers? Use your formulasheet and basic calculator functions only.
Translate the following statements into symbolic form using capital letters to represent affirmative English statements.- Neither Ferrari nor Maserati makes economy cars.
Is this a test of homogeneity or independence?- Write an appropriate hypothesis.- Are the conditions for inference satisfied?- Find the P-value for your test.
Seventy million pounds of trout are grown in the U.S. every year. Farm-raised trout contain an average of 32 grams of fat per pound, with a standard deviation of 7 grams of fat per pound.
How many automobiles should be used in the test? Assume that preliminary mileage tests indicate the standard deviationis 2.6 miles per gallon.
Find the minimum sample size needed using a prior study that found that 36% of the respondents said they support abolishing the penny.
Finding the probability selecting a defective item from a collection of items using tree diagram
engine capacity the engine in a 1957 chevrolet corvette has eight cylinders. each cylinder is a right cylinder with a
a random sample of medical files is used to estimate the proportion p of all people who have blood type b.a if you have
Perform the test as it should have been done and find if you come to a different conclusion. Explain why the results were different and why your test was a stronger and more reliable test.
Formulate a linear programming model that can be used to determine the number of units each model that should be produced in order to maximize the total contribution to profit
surveys have become an important component of american life. they directly affect us in so many ways including public
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