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%.
The answers are:
1. 35 burgers
2. 196 cheeseburgers
3. 630 burgers
4. $3.20
1:
3*3=8 ;
8*3=23
23*3=68
68*3=204
1.3,8,23,68,204 ...
2.
2*3=6
6*3=18
18*3=54
2, 6,18,54
multiply all on 3)
Answer:
(67879,96344)
Step-by-step explanation:
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