Mathematics, 13.02.2021 07:00 asims44
Suppose we want to choose 2 objects, without replacement, from the 4 objects pencil, eraser, desk, and chair.
(a) How many ways can this be done, if the order of the choices matters?
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(b) How many ways can this be done, if the order of the choices does not matter?
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Answers: 1
Mathematics, 21.06.2019 21:00
Acomposition of transformations maps ฮดxyz to ฮดx"y"z". the first transformation for this composition is , and the second transformation is a 90ยฐ rotation about point x'.
Answers: 1
Mathematics, 21.06.2019 21:30
Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?
Answers: 2
Mathematics, 21.06.2019 21:30
100 points? me its important โผ๏ธโผ๏ธโผ๏ธโผ๏ธโผ๏ธโผ๏ธโผ๏ธโผ๏ธโผ๏ธโผ๏ธโผ๏ธ
Answers: 1
Mathematics, 22.06.2019 02:30
An engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots weighing between 120 lb and 161 lb. the new population of pilots has normally distributed weights with a mean of 125 lb and a standard deviation of 28.1 lb. a)if a pilot is randomly selected, find the probability that his weight is between 120 lb and 161 lb.the probability is approximately? b. if 36 different pilots are randomly selected, find the probability that their mean weight is between 120 lb and 161 lb. the probability is approximately? c. when redesigning the ejection seat, which probability is more relevant? . part (b) because the seat performance for a single pilot is more important. b. part (b) because the seat performance for a sample of pilots is more important. c. part (a) because the seat performance for a sample of pilots is more important. d. part (a) because the seat performance for a single pilot is more important.
Answers: 3
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