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MATH SOLVE
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A recent study was conducted to investigate the duration of time required to complete a certain manual dexterity task. the reported mean was 10.2 seconds with a standard deviation of 16.0 seconds. suppose the reported values are the true mean and standard deviation for the population of subjects in the study. if a random sample of 144 subjects is selected from the population, what is the approximate probability that the mean of the sample will be more than 11.0 seconds?
General
2 months ago
What is the equation of the line, in slope-intercept form, that contains the points (-1,8) and (2,-1)? A) y= -3x +5 B) y= -x+5 C) y= x+5 D) y= -x+3
General
2 months ago
A building has n floors numbered 1,2,...,n, plus a ground floor g. at the ground floor, m people get on the elevator together, and each gets off at a uniformly random one of the n floors (independently of everybody else). what is the variance of the number of floors the elevator does not stop at? (in fact, the variance of the number of floors the elevator does stop at must be the same (do you see why?) but the former is a little easier to compute.)
General
2 months ago
A rectangular poster is to contain 722 square inches of print. the margins at the top and bottom of the poster are to be 2 inches, and the margins on the left and right are to be 1 inch. what should the dimensions of the poster be so that the least amount of poster is used?
General
2 months ago
I need help with 2 alegbra questions. Get 10 easy points!
General
2 months ago
A meteorologist reports that the ratio of snowfall in January to total snowfall during the average winter is 2 to 5. If 34 inches have falled in January of the current year, find the predicted total snowfall for the entire winter.
General
2 months ago
For numbers 2a-2d without multiplying use the symbols form he list on the right to indicate the product will compare with the factor. Symbols can be used more than once
General
2 months ago
???????????????????????????????????????????????????????????????????????help please i give brainlieast!1-3Q please thank you
General
2 months ago
Consider the line -x+3y=1Find the equation of the line that is perpendicular to this line and passes through the point (7,-5). Find the equation of the line that is parallel to this line and passes through (7,-5). Equation of perpendicular line: Equation of parallel line:
General
2 months ago
Lucia and Maria are business women who decided to invest their money by buying farmland in Brazil. They started their investments at the same time, and each month they buy more land. Lucia bought 11 hectares of land in the first month, and each month afterwards she buys 5 additional hectares. Maria bought 6 hectares of land in the first month, and each month afterward her total number of hectares increases by a factor of 1.4. In which month will Maria's amount of land first exceed Lucia's amount of land?
General
2 months ago
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