Answer: 100
5
Step-by-step explanation:
a) The mean of a normal distribution is also the median. Half the population will have values above the mean. Half of 200 is 100, so ...
... 100 students will have grades above 70%.
b) 84% is 14% above the mean. Each 7% is 1 standard deviation, so 14% is 2 standard deviations above the mean. The empirical rule tells you 95% of the population is within 2 standard deviations of the mean, so about 5% of students (10 students) got grades higher than 84% or lower than 56%. The normal distribution is symmetrical, so we expect about 5 students in each range.
... about 5 students will have grades above 84%.
Answer:
Velocity time graph represent and exponential function
These are vertical angles so they are equal so
6a + 11 = 2a + 83
now solve for a
Answer:
It's actually A, because the US population got doubled ever year
Answer:
9
Step-by-step explanation:
If you add 9 to both sides, you will isolate the 'x' term.
hope this helps :)
