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The results of a recent study regarding smoking and three types of illness are shown in the following table.
Illness Non-Smokers Smokers TotalsEmphysema 20 60 80Heart problem 70 80 150Cancer 30 40 70Totals 120 180 300
We are interested in determining whether or not illness is independent of smoking.
a. State the null and alternative hypotheses to be tested.b. Show the contingency table of the expected frequencies.c. Compute the test statistic.d. The null hypothesis is to be tested at 95% confidence. Determine the critical value for this test. What do you conclude?e. Determine the p-value and perform the test.
Using the Library, web resources, and/or other materials, find a real-life application of a linear function. State the application, give the equation of the linear function, and state what the x and y in the application represent.
A recipe uses two eggs, three cups of flour & some other ingredients. The recipe makes enough batter for 6 servings. How many cups of flour will be needed to make enough batter for ten servings?
Find the value of the integral of g(z) around the circle |z - i| = 2 in the positive section when g(z) = 1/(z^2+4)
A rectangular enclousure must have an area of at least 700 yards. If 160 yd of fencing is to be used, and the width cannot exceed the length, what limits must the width of the enclosure lie?
one time each to fill in these circles and make a true equation. One solution is 237 + 654 =891. There are over 300 solutions with 32 different sums. How many can you find?
If one student is randomly selected, find the probability that the student is a male.
A ball is thrown straight down from the top of a 350 foot building with an initial velocity of -20 feet per second. What is the instantaneous velocity after falling 85 feet?
A student inherits 17500 dollars and puts the money in two different accounts. One account earns 5% annually and one account earns 8% annually. She earned a total of 1075 dollars after one year. How much money is in each account?
Probability and Data Collection, 1. Suppose you have 4 nickels, 6 dimes, and 4 quarters in your pocket. If you draw a coin randomly from your pocket, what is the probability that
earth would weigh 39lb on theta space station.if a piece of equipment weighs 2006lb on earth, what would it weigh on the theta space station? round to the nearest whole unit.
A father and his son can clean the house together in 7 hours. When the son works alone, it takes him an hour longer to clean than it takes his dad alone. Find how long it takes the son to clean alone.
Find the values of f(x) at which each of the following functions is discontinuous. Why is the function discontinuous at that value?
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