The question asked by Troy is a statistical question because there would be variability in the answers he get fro the 12 maths teachers.
<h3>What is a statistical question?</h3>
A statisical question is a question that can only be answered through the collection of data. Thhere would be variablility in the results gotten from the data.
A non- statistical question is a question that has only one answer. For example, how old are you? is a non-statistical question.
To learn more about a statisitcal question, please check: brainly.com/question/21508412
Answer:
x = 3 - 3/10y
Step-by-step explanation:
2/3x + 1/5y = 2
Subtract 1/5y from each side
2/3x + 1/5y -1/5 y= 2-1/5 y
2/3x = 2-1/5y
Multiply by 3/2 to isolate x
3/2 * 2/3x = 3/2 (2-1/5y)
x = 3/2 (2-1/5y)
Distribute the 3/2
x = 3 - 3/10y
Answer:
D. 274
Step-by-step explanation:
A normal distribution of the scores is assumed. In the figure attached, the standard normal distribution table is shown.
If only top 5% of athletes are part of the team, then we need to find the value of the table which has a probability of 95%, that value is between 1.64 and 1.65, so we interpolate it as 1.645. The table was made for a variable with mean = 0 and standard deviation (sd) equal to 1, therefore to refer the result to our variable we compute:
1.645 = (x - mean)/sd
x = 1.645*sd + mean
x = 1.645*15 + 250 ≈ 274
So, 95% of the scores are below 274, then 274 is the minimum qualifying score
Answer:
186.3
Step-by-step explanation:
Answer:
A = 1/2*(2 + 8)*4 + 1/2*(8 + 7)*2 = 35
35 * 2.25^2 = 177.2 ft² --> Answer c.
