Answer:
ī=80; s = 10
Step-by-step explanation:
When the standard deviation is from a finite group it is denoted by s. The number of transactions from an atm are countable in a day. So the standard deviation will be represented by s.
and ī represents the mean.
The other choices are incorrect because mean is usually represented by a bar over the alphabet such as x.
a simple alphabet does not denote the mean of the sample or population.
It’s -7 because -7^2= 49-35-9=5
Answer:
a. decrease
b. recklessly
c. increase
Step-by-step explanation:
Suppose the large number of auto accidents in a small town results in new legislation that requires all citizens of the town to install new anti-lock brakes on their cars. These new brakes cut the time it takes a car to stop by 50%, allowing drivers to avoid collisions with other cars and pedestrians more easily. The new brakes <u>decrease</u> the probability that a vehicle will collide with another vehicle but also give drivers an incentive to drive more <u>recklessly</u> which could potentially <u>i</u><u>ncrease</u> the number of car accidents.
Because the new brakes cut the time it takes a car to stop by 50%, allowing drivers to avoid collision easily, drivers may become confident and drive recklessly which could potentially increase the number of car accidents
57 + x + x + 130 = 167
57 + 2x + 130 = 167
187 + 2x = 167
- 187 - 187
---------------------------
2x = -20
------ -------
2 2
x = -10
The answer is A. here why. if we take the 45 times 5 you get the answer of how much she made all together for babysitting, if she only made 225 all together, you take 300-225=75. so the 75 represent the other she made by doing chores. you take 75 divide by 5 which is how many weeks it took it took you get 15 which how much she made each week by doing chores
