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Assume that the average full time college student in the U.S. requires a total of $10,500 per year to cover the costs of tutition, books and fees with a standard deviation of $1,300. If 50 full time students are randomly sampled in the U.S., what is the probability that their total annual costs for tutition, books and fees exceed $550,000? Round your answer to 4 decimal places. Remember to round your z-value to 2 decimal places.
the students are psychology majors & 62% are business majors. If there are 200 students, how many of them are majoring in both psychology & business?
Prove the identity (n~r) (r~k) = (n~k) ((n-k)~(r-k)), whenever n, r, and k are nonnegative integers with r less than/equal to n and k less than/equal to r:
Matrices are the most common and effective way to solve systems of linear equations. However, not all systems of linear equations have unique solutions. Before spending time trying to solve a system, it is important to establish whether it in fact..
Demand,Revenue, & the Largest Reduction to maximize Revenue, 200 DVD players are sold per week for $300 each. For each $10 rebate (reduction in sale price), 20 additional DVD players are sold.
Chuck travels 88 miles in the same time that Dana travels 78 miles. If Chuck's rate of travel is 5 mph more than Dana's, and they travel the same length of time, at what speed does Chuck travel?
Harold operates a hot dog stand at the Jugulars football games. He pays $2000 per game to rent the space. Each hot dog (with bun and condiments) costs him $0.33, and he sells hot dogs for $3 each.
the proportions of the rectangle never changes. how fast is the area of the rectangle increasing when its dimensions are 12cm by 8cm.
Then, explain the meaning of either a vertical shift of 10 units or a horizontal shift of ten units. Be sure to explain what this shift would mean in the context of the function.
Find the expected value E(X), the varianceVar(X) and the standard deviation σ ( X ) for each of the density functions.
Discuss the Weierstrass Approximation Theorem. When would you use this theorem? Are there other options for solving these types of problems besides the Weierstrass Approximation Theorem?
Multiple choice questions on regression.
Each glass of milk has 8 grams of protein, 11 grams of carbohydrates, and 260 milligrams of calcium. How many servings of each food should the dietitian provide the patient?
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