Mathematics, 16.04.2020 17:22 kodakcam02
1 point) The scores of students on the SAT college entrance examinations at a certain high school had a normal distribution with mean µ=559.2μ=559.2 and standard deviation σ=26.8σ=26.8. (a) What is the probability that a single student randomly chosen from all those taking the test scores 563 or higher? ANSWER: For parts (b) through (d), consider a simple random sample (SRS) of 35 students who took the test. (b) What are the mean and standard deviation of the sample mean score x¯x¯, of 35 students? The mean of the sampling distribution for x¯x¯ is: The standard deviation of the sampling distribution for x¯x¯ is: (c) What z-score corresponds to the mean score x¯x¯ of 563? ANSWER: (d) What is the probability that the mean score x¯x¯ of these students is 563 or higher? ANSWER:
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Mathematics, 21.06.2019 15:00
The sixth grade art students are making a mosaic using tiles in the shape of right triangles.each tile has leg measures of 3 centimeters and 5 centimeters.i f there are 200 tiles in the mosaic what is the area of the mosaic.
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Mathematics, 21.06.2019 17:40
Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)
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Mathematics, 21.06.2019 20:30
Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.
Answers: 1
1 point) The scores of students on the SAT college entrance examinations at a certain high school ha...
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