Answer:
Mean = 1.9
Standard deviation = 0.6
Step-by-step explanation:
The Mean is calculate by the formula:
⇒
Thus Mean to the nearest tenth is 1.9
Standard Deviation is the square root of sum of square of the distance of observation from the mean.
where, is mean of the distribution.
Putting all values in the formula, We get
Standard Deviation = 0.597 ≈ 0.6
Answer:
The price of a senior ticket is $12.
Step-by-step explanation:
Given:
Mr. Smith purchased 8 senior tickets and 5 child tickets for $136. Mr. Jackson purchased 4 senior tickets and 6 child tickets for $96.
Now, to get what is the price of a senior ticket.
Let the senior ticket be and the child ticket be
:
So, according to question
.........(1)
...........(2)
Now, we have system of equations:
Multiplying the equation (2) by -2 we get:
.......(3)
Now, adding the equation (3) and (1) the variables and the numbers:
Dividing both sides by -7 we get:
Putting the value of y in equation (2) we get:
On solving the equation we get:
.
Therefore, the price of a senior ticket is $12.