Answer:
The null hypothesis is 
.
The alternative hypothesis is 
Step-by-step explanation:
Suppose that a recent article stated that the mean time spent in jail by a first-time convicted burglar is 2.5 years.
At the null hypothesis, we test if the mean is of 2.5 years, that is:
A study was then done to see if the mean time has increased in the new century.
At the alternative hypothesis, we test if the mean has increased, that is, if it is above 2.5 years. So
Answer:
30
Step-by-step explanation:
18-3(4-6)*2
=18-3*(-2)*2
=18-3*(-4)
=18-(-12)
=18+12
=30
Answer:
The total cost 
in dollars of going to the baseball game for 
people of a family can be given as:
Step-by-step explanation:
Given:
At a baseball game:
Cost of car parking = $5
Cost per ticket = $21
To write an equation in the form of 
representing the total cost of going to the baseball game.
Solution:
The total number of people in the family is =
Using unitary method to find the cost of tickets for persons.
If 1 ticket costs = $21
<em>Then, tickets will cost in dollars</em><em> = </em>
Fixed rate for car parking = $5
Thus, the total cost in dollars of going to the baseball game for people of a family can be given as:
Answer:
| -3 | = 3
Step-by-step explanation:
minus is removed
Answer:
The correct answer is option A.120
Step-by-step explanation:
Let's start by analyzing the information they have given us.
We know that the stereo has a list price of $ 150, but at the time of payment, we are told that it has a 20% discount.
Now we must find out what the discount was applied to know the final price of the stereo.
One way to calculate the percentage would be multiplying 150 by 0.20
150.0.20 = 30
The discount applied is $ 30, so now we just have to subtract that amount from the original price:
150-30 = 120
Therefore, the correct answer is option A.
