Ask question

Ask question

All categories

2 years ago

5

At an intersection, the red light times are normally distributed with a mean time of 3 minutes and a standard deviation of 0.25

minutes. Approximately what percent of red lights last between 2.5 and 3.5 minutes? (2 points)

1 answer:

VladimirAG [237]2 years ago

3 0

Answer:

95.4%

Step-by-step explanation:

Z(low)=-2 0.022750132

Z(upper)=2 0.977249868

You might be interested in

A square has an area of 100 square meters.<br> What is the perimeter of the square?

LiRa [457]

Answer:

40 square meters

Step-by-step explanation:

Perimeter means to add up all sides.

area means one side times one side

10 times 10 makes 100 so i am guessing each side is 10

10 + 10 + 10 + 10 = 40

5 0

2 years ago

What us the slope of this line

KIM [24]

Answer:

slope = $\frac{1}{2}$

Step-by-step explanation:

Calculate slope m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (0, - 2) and (x₂, y₂ ) = (4, 0) ← 2 points on the line

m = $\frac{0-(-2)}{4-0}$ = $\frac{0+2}{4}$ = $\frac{2}{4}$ = $\frac{1}{2}$

6 0

2 years ago

Syma will spend more than $32 on gifts. So far, she has spent $15 . What are the possible additional amounts she will spend? Use

julia-pushkina [17]

Answer:

Step-by-step explanation:

3 0

2 years ago

VERY IMPORTANT I NEED HELP!!!

Advocard [28]

Answer:

2√3

Step by step Explanation:

$= > \frac{ \sqrt{96} }{ \sqrt{8} } \\ \\ = > \frac{ \sqrt{12 \times 8} }{ \sqrt{8} } \\ \\ = > \frac{ \sqrt{12} \times \sqrt{8} }{ \sqrt{8} } \\ \\ = > \sqrt{12} \\ \\ = > \sqrt{4 \times 3} \\ \\ = > \sqrt{2 \times 2 \times 3} \\ \\ = > 2 \sqrt{3}$

3 0

3 years ago

2.952 + 39.24 = <br>A: 42.192<br>B: 68.76<br>C: 6.876<br>D: 687.6<br>E: 36.288<br>F: 42.76

kirill [66]

Answer:

The answer to this question is A

4 0

3 years ago

Read 2 more answers