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The average monthly gasoline purchase for a family with 2 cars is 90 gallons. This statistic has a normal distribution with a standard deviation of 10 gallons. A family is chosen at random.
(a) Find the probability that the family's monthly gasoline purchases will be between 84 and 105 gallons.
(b) Find the probability that the family's monthly gasoline purchases will be less than 95 gallons.
(c) Find the probability that the family's monthly gasoline purchases will be more than 92 gallons
A linear regression model has a slope of -2.5 and an intercept of 10. The sample coefficient of determination is 0.50. What is the value of the sample correlation coefficient?
Adams High School has 151 freshman, 198 sophomores, 221 juniors, and 242 seniors. If two students are selected at random without replacement, what is the probability of selecting a freshman on the first selection and a senior on the second selecti..
A man 6 feet tall walks at a rate of 5 feet per second away from a light that is 15 feet above ground . When he is 10 feet from the base of the light,
ubes of a metal whose edges are in the ratio 3:4:5 are melted and converted into a single cube whose diagonal is 12root3 cm. find the edges of the three cubes.
Use chain rule to verify that every function of the form. Then use this fact to find the solution which also satisfies the initial conditions:
what will happen to the volume of a cube with a side measurement of 6cm if its length is double? note the cube retain its shape.
Calculate the energy required to produce 7.00 mol Cl2O7 on the basis of the following balanced equation.
Five hundred feet of fencing is available for a rectangular pasture alongside a river, the river is serving as one side of the rectangle. Find the dimensions for the greatest area.
Assume that y0 dollars is deposited into an account paying r percent compunded continuously. If withdrawals are at an annual rate of 200t dollars (assume these are continuous), find the ammount in the account after T years.
Given the quadratic equation y = 5x2-3x+7 .What is the ordered pair that defines the y-intercept?
use a combinatorial proof to show the summation of k=0 to the P elements- (n/p) (m/[p-k])=([n+m]/p)
Determine the slope of the tangent to each of the following curves:
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