Answer:
$9.12
Step-by-step explanation:
Decimal places are:
0.0 --> Tenths
0.00 --> Hundredths
0.000 --> Thousandths
etc.
Therefore we need to round the decimal to 2 decimal places...
9.123 --> 9.12 (The number rounds down if the number after it is between 1 and 4 and it rounds up if the number after it is between 5 and 9. In this scenario the number after it is "3" therefore it rounds down)
For 12a, they are asking about winter sports, they could ask about all sports.
For 12b, they ask an audience about the show they came to see; which is inherently a bias as they are going to be partial towards certain contestants; they could ask them about random contestants of unaffiliated shows.
For 13a, it should be continuous, and I'm sorry but I don't know the types of graphs available.
For 13b, I believe it should be discreet, and once again apologize for not knowing the types of graphs.
Answer:
a) Sample mean: 48.71
Sample median: 48.3
Sample variance: 5.41
Sample standard deviation: 2.37
Step-by-step explanation:
a) Sample mean:

Sample median: M=48.3
Note: I order the data increasingly and take the value N / 2 = 40. In this way there are 39 values above and 39 values below the median.
Sample variance:

Sample standard deviation

b)
Answer:
its 4
Step-by-step explanation:
Because since the next number is 8 and its above 5 then a number above 9 is something you cannot put in so you just round the whole number since the rest of the numbers are also 9.
Answer:
1:12
Step-by-step explanation:
I hope this helps!