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OPINION POLLS A survey involving 400 likely Democratic voters and 300 likely Republican voters asked the question: Do you support or oppose legislation that would require trigger locks on guns, to prevent misuse by children? The following results were obtained:
If a randomly chosen respondent in the survey answered "support," what is the probability that he or she is a likely Republican voter?
Question about Probability density function, Let X and Y have joint probability density function f(x,y) (s,t) = ce ^ -(s + 2t) for 0
Rita has a collection of 108 coins consisting of nickels, dimes, and quarters. The number of dimes is 4 more than one-third the number of nickels, and the number of quarters is twice the number of dimes. How many coins of each kind does she have?
Calculate the mode
in 2002 shool had 236 students in 2001 thay had 214. to the nearest tenth what was the percent of change in the number of students.
question two sides of a triangle measure 12 and 20. the measure of the included angle is 40. find the area of the
Without doing any further calculation, what do you think the jeans in problem #1 would cost if they had gone on sale by 15% first and then had their price increased by 15%? Why?
U.C.L.A. states that at least 40% of the students live on campus. From a sample of 250 students, 90 live on campus. Does this sample provide evidence that fewer than 40% live on campus? Conduct the test with a=0.01.
Does the breakfast revenue seem to increase as the number of occupied rooms increases? Draw a scatter diagram to support your conclusion.
A plane flies 430 miles with the wind and 310 miles against the wind in the same length of time. If the speed of the wind is 30mph, what is the speed of the plane in still air?
At the instant when the water in the container is 3 inches deep, the surface level is falling at the rate of -0.90 in./s. Find the rate at which water is being drained.
Joseph decided to test the numbers by seeing how much money he would accumulate by a retirement age of 65 if he put one paycheck away at the end of each year.
Find the required sample size required
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