95% of red lights last between 2.5 and 3.5 minutes.
<u>Step-by-step explanation:</u>
In this case,
- The mean M is 3 and
- The standard deviation SD is given as 0.25
Assume the bell shaped graph of normal distribution,
The center of the graph is mean which is 3 minutes.
We move one space to the right side of mean ⇒ M + SD
⇒ 3+0.25 = 3.25 minutes.
Again we move one more space to the right of mean ⇒ M + 2SD
⇒ 3 + (0.25×2) = 3.5 minutes.
Similarly,
Move one space to the left side of mean ⇒ M - SD
⇒ 3-0.25 = 2.75 minutes.
Again we move one more space to the left of mean ⇒ M - 2SD
⇒ 3 - (0.25×2) =2.5 minutes.
The questions asks to approximately what percent of red lights last between 2.5 and 3.5 minutes.
Notice 2.5 and 3.5 fall within 2 standard deviations, and that 95% of the data is within 2 standard deviations. (Refer to bell-shaped graph)
Therefore, the percent of red lights that last between 2.5 and 3.5 minutes is 95%
Answer:Richard is 20 and Teo is 8
Step-by-step explanation: I attached a picture of the process I followed to solve. Hope this helps!
The supplement of <span><span>135°</span><span>135°</span></span> is the angle that when added together form a straight angle (<span><span>180°</span><span>180°</span></span>).<span><span><span>180°</span><span><span>−135</span>°</span></span><span><span>180°</span><span><span>-135</span>°</span></span></span>Subtract <span>135135</span> from <span>180180</span> to get <span>4545</span>.<span>45<span>°</span></span>
Its not linear because growth rates vary with age, gender also plays a role in the change
