Mathematics, 02.04.2020 23:37, skyvargasov9cad
The average number of pages for a simple random sample of 40 physics textbooks is 435. The average number of pages for a simple random sample of 30 mathematics textbooks is 410. Assume that all page length for each types of textbooks is normally distributed. The standard deviation of page length for all physics textbooks is known to be 40, and the standard deviation of page length for all mathematics textbooks is known to be 40.Part One: Assuming that on average, mathematics textbooks and physics textbooks have the same number of pages, what is the probability of picking samples of these sizes and getting a sample mean so much higher for the physics textbooks (one-sided p-value, to four places)?Part Two: Assuming that on average, mathematics textbooks and physics textbooks have the same number of pages, what is the probability of picking samples of these sizes and getting sample means as far apart as we did (two-sided p-value, to four decimal places)
Answers: 3
Mathematics, 20.06.2019 18:02, Shihhschool20
Aline of best fit is drawn for the set of points shown on the graph. which point is an approximate extrapolation for x = 30 from the line of best fit?
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Mathematics, 21.06.2019 16:30, VgCarlos2596
What are “like terms”? why can we only add like terms?
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Mathematics, 21.06.2019 19:30, raytaygirl
Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?
Answers: 2
The average number of pages for a simple random sample of 40 physics textbooks is 435. The average n...
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