95.44% IQ scores are between 77 and 125
We're given,
Mean (a)=101
standard deviation (b)=12
To find : ![P[77 < x < 125]](https://tex.z-dn.net/?f=P%5B77%20%3C%20x%20%3C%20125%5D)
Using Empirical Rule:
∴ 
![P[\frac{77-101}{12} < \frac{x-a}{b} < \frac{125-101}{12}]\\](https://tex.z-dn.net/?f=P%5B%5Cfrac%7B77-101%7D%7B12%7D%20%3C%20%5Cfrac%7Bx-a%7D%7Bb%7D%20%3C%20%5Cfrac%7B125-101%7D%7B12%7D%5D%5C%5C)
![=P[-2 < z < 2]\\](https://tex.z-dn.net/?f=%3DP%5B-2%20%3C%20z%20%3C%202%5D%5C%5C)
![=P[Z < 2]-P[Z < -2]\\](https://tex.z-dn.net/?f=%3DP%5BZ%20%3C%202%5D-P%5BZ%20%3C%20-2%5D%5C%5C)
=95.44% (approx)
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The number of hours it would take for half of the workers to complete the same job is 96 hours.
<h3>How much does it take to 6 workers to complete the job?</h3>
It is already known 6 workers working at the same rate can complete this job in a total of 48 hours, which means each of the workers represents approximately:
- 8 hours of work (48 / 6 = 8).
<h3>What happens if the number of workers is reduced?</h3>
In this case, it expected the total of hours to complete the same job increase. Moreover, the time will proportionally increase depending on the reduction of workers. Here are some examples:
- -1/3 of workers = +1/3 of time
- -1/5 of workers = + 1/5 of time
This means by reducing the workers to half of the team (-1/2) the time will duplicate.
Note: This question is incomplete; here is the possible complete question.
All the workers on a 6 person team work at the same rate. All six members of the team, working together, are able to pour foundations in 48 hours. How many hours would this job take if only half of the team worked on this task.
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Primary school is grades k-6 (or k-5 in some cases) and secondary school is grades 7-12 (or 6-12 in some cases).
According to consumerfinance.gov private student loans are not funded or subsided by the federal government private student loans are funded by banks, credit unions, state loan programs, or other types of lenders.
The suggested number of sleep hours for teens is between 8 to 10 hours daily.
<h3>
Sleeping hours of teens</h3>
This is the estimated time in which teens are expected to sleep or have full rest.
The average estimated time of sleep hours for teens is between 8 to 10 hours. This may vary according to health condition of individuals.
Thus, the suggested number of sleep hours for teens is between 8 to 10 hours daily.
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