Answer:
a) Normal Distribution
b) 0.146
c) 0.070
Step-by-step explanation:
We are given the following information in the question:
The number of accidents per week at a hazardous intersection varies with mean 2.2 and standard deviation 1.4
a)
: mean number of accidents per week at the intersection during a year (52 weeks)
According to central limit theorem, as the sample size becomes larger, the distribution of mean approaches a normal distribution.
Since we have a large sample, the approximate distribution of
is a normal distribution with

b) P(mean is less than 2)
Formula:

P(x > 610)

Calculation the value from standard normal z table, we have,

c) P(fewer than 100 accidents at the intersection in a year)
P(x < 100)

Calculation the value from standard normal z table, we have,

Answer:
Step-by-step explanation:
The speed is 212 miles per hour. The velocity is the same, but it has direction. So if up is positive and down is negative, then the velocity is -212 miles per hour.
Answer:
Equivalent
Step-by-step explanation:
Look at 6/18. 18 divided by 6 is 3, which is the denominator. 6 divided by 6 is 1, so the numerator. So 1/3.
11:32 pm + 5 hours= 4:32pm
4:32 pm + 45 minutes = 5:17 pm
3/4 hour = 45 min