Answer:
the answer is B. 8
Step-by-step explanation:
just look at the graph and see where the line touches the x axis, that's the zero
Answer:
106.67%
Step-by-step explanation:
85% as a fraction is 4/5
25% as a fraction is 3/4
<h2>
/
=
</h2>
Convert 16/15 to a decimal: 1.067
Multiply: 1.067 · 100= 106.67%
Answer: n is greater than or equals to 1, where n is an integer
Step-by-step explanation:
Answer: in order to qualify, the time must be at least 15.93 minutes
Step-by-step explanation:
Let x be a random variable representing the average response times of fire departments to fire calls. Since it follows a normal distribution, we will determine the z score by applying the formula,
z = (x - µ)/σ
Where
x = sample mean
µ = population mean
σ = population standard deviation
From the information given,
µ = 12.8 minutes
σ = 3.7 minutes
in order to qualify for the special safety award, the probability value would be to the right of the z score corresponding to 80%
The z score corresponding to 80% on the normal distribution table is 0.845
Therefore,
0.845 = (x - 12.8)/3.7
0.845 × 3.7 = x - 12.8
3.13 = x - 12.8
x = 12.8 + 3.13 = 15.93
