05/21/23

Solving a distance, rate, time problem using a system of linear
Two buses leave a station at the same time and travel in opposite directions. One bus travels 16km/h slower than the other. If the two buses are 786 kilometers apart after 3 hours, what is the rate... more
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02/20/23

a particular fruit...
A particular fruit's weights are normally distributed, with a mean of 425 grams and a standard deviation of 6 grams.If you pick 10 fruit at random, what is the probability that their mean weight... more
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02/12/23

Statistics and probability

How many different four-letter passwords can be created for a software access if no letter can be used more than once?
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02/12/23

Let B = [201|020|102] (3x3 matrix)
(a) What does the Spectral Theorem guarantee about the matrix B?(b) Find the eigenvalues and eigenvectors of B.(c) Assume that f(x,y,z) = x2 +y2 +z2 +xz has a critical point at (0,0,0). Is f(0,0,0)... more
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02/05/23

the five number summary in the data set was 45,54,59,63,70. an observation is considered a outlier if it’s below what. An observation is considered a outlier if it’s above what?

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01/28/23

statistics and percentages
A student in a statistics class scored an 80%, 85%, and 90% on the first 3 tests. What must the student score on the last test to have at least a 87% in the class?
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04/29/20

Farmers and Watermelon Crops
What price do farmers get for their watermelon crops? In the third week of July, a random sample of 42 farming regions gave a sample mean of x = $6.88 per 100 pounds of watermelon. Assume that σ is... more
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04/23/20

8) Use integration by parts, by hand, to determine ∫ x cos(x) dx
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03/05/15

What is the probability that at least 2 of the dinners selected are pasta dinners?
Assume that there are 15 frozen dinners: 6 pasta, 5 chicken, and 4 seafood dinners. The student selects 5 of them.What is the probability that at least 2 of the dinners selected are pasta dinners?
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