Mathematics, 03.04.2020 11:38 Maria3737
PISA is an international survey conducted every three years among school students in a number of countries. The survey in 2009 included 4,700 students from Norway. In the natural sciences, the Norwegian students scored an average of 500 points. It was exactly like the international average. The standard deviation for Norwegian pupils was 80 points. We randomly pull out a student among the Norwegian participants. You can expect the student's score to be normally distributed.
a) Determine the probability that the student scored at least 650 points.
b) Determine the probability that the student scored between 475 and 535 points.
Answers: 3
Mathematics, 21.06.2019 16:30, Kayccee9958
Anyone know? is appreciated! will mark brainliest if correct!
Answers: 2
Mathematics, 21.06.2019 21:30, xaguilar
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 23:00, naomiedgrey
Look at the chart showing the results of a baseball player at bat. which is the probability of getting a hit?
Answers: 1
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