Answer: n = 2401
Step-by-step explanation:
Given;
Confidence level = 2% - 99%
n = ? ( which is the sample size is unknown ).
Solution:
Where;
n = [z/E]^2*pq
Since no known value for ( p ) estimate is given, the "least biased" estimate is p = 1/2
Substituting the given data into the formula.
n = [1.96/0.02]^2(1/2)(1/2)
n = 2401
The minimum number of truck drivers the statistician needs to sample for an accurate result is 2401
Answer: first one is c. Second one should be b and last one should be a
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
Since the shelves are 75.5cm long, the total length she would be needing is 75.5cm × 6 = 453cm
Now, the length of the wood she is using is 180cm, to get enough length to make the shelves, we would need to divide 453cm by 180cm which gives a value of around 2.51
This is approximately equal to 3 when rounded up to the nearest whole number.
Answer:
79
Step-by-step explanation:
Order of operations GERMDAS
Grouping: no grouping
Exponents: 9²=81 so 6÷3+81-4
Radicals: no radicals
Multiplication: no multiplication
Division: 6÷3=2 so 2+81-4
Addition: 2+81=83 so 83-4
Subtraction: 83-4=79
