Answer:
d
Step-by-step explanation:
Answer:
A) 99.7% of people have an IQ between 64 and 136.
B) 5% of people have an IQ score less than 76 or greater than 124.
C) 16% of people have an IQ score greater than 112.
Step-by-step explanation:
The Empirical Rule tells us that, in a normal or 'bell-shaped' distribution, 68% of the data is one standard deviation from the mean, 95% of the data is two standard deviations from the mean, and 99.7% of the data is three standard deviations from the mean.
A) 64 and 136 are 3 standard deviations away from the mean, so 99.7% of people have an IQ between 64 and 136.
B) 76 and 124 are 2 standard devations away from the mean, but the answer is asking what percentage is not between them. 100% - 95% gives us 5%.
C) 112 is one standard deviation away from the mean. If we want to find the percentage greater, then we can do 100% - 50% (as 112 is to the left of the mean), then we can take half of 68 to get 34%, and after subtracting 50% and 34% from the 100%, we get 16%.
A) write an equation you can solve to find the cost of one ticket
x=cost of one ticket.
9x+5=104
b)
I have to solve this equation.
1)adding -5 to each side
2) dividing both sides by 9
c)
9x+5=104
1) 9x+5-5=104-5
9x=99
2) 9x/9=99/9
x=11
the cost of each ticket was $11
Answer:
45 is the anwser
Step-by-step explanation:
thank you
Answer:
what?
Step-by-step explanation:
