Answer: There are 15 possible ways to fill in answers .
Step-by-step explanation:
Given : The number of multiple choice questions = 5
The total number of choices for each question {a, b,
and c} = 3
Now by using the fundamental principle of counting , the number of possible ways to fill in answer is given by :-
Therefore, there are 15 possible ways to fill in answers .
Answer: 4
Step-by-step explanation:
For given Population standard deviation , the formula to sample size is given by :-
, where z* = Two-tailed critical value.
E = Margin of error.
Given : years
We know that , Critical value for 90% confidence interval : z* = 1.645
Margin of error : E=1.3 years
Then, the minimum sample size required to construct a 90% confidence interval for the population mean will be :-
[Rounded to the nearest whole number.]
Hence, the minimum sample size required = 4
Answer:
x^2 - 2x+4
Step-by-step explanation:
hope this helps
Area = 50.27 ft squared
area of circle = πr^2
a = π(4^2)
a = π16
a = 50.27
π = about 3.14159
3.14159(16) = 50.26544 --> 50.27