Answer:
it is B
Step-by-step explanation:
Answer:
The cutoff for a failing score was 40,
Approximately 2.3% of the students failed.
Step-by-step explanation:
Given,
Mean, 
Standard deviation, 
Let x represents the cutoff for a failing score,
Thus, according to the question,
Thus, the cutoff for a failing score is 40,
∵ P(<-2) = 0.02275 = 2.275 % ≈ 2.3 %
Hence, Approximately 2.3 % of the students failed.
Answer:
t distribution behaves like standard normal distribution as the number of freedom increases.
Step-by-step explanation:
The question is missing. I will give a general information on t distribution.
t-distribution is used instead of normal distribution when the <em>sample size is small (usually smaller than 30) </em>or <em>population standard deviation is unknown</em>.
Degrees of freedom is the number of values in a sample that are free to vary. As the number of degrees of freedom for a t-distribution increases, the distribution looks more like normal distribution and follows the same characteristics.
Answer:
Tom will need 
gallons of fruit drink.
Step-by-step explanation:
Hint- This question can be solved by unitary method.
Tom has a recipe for punch that calls for 
gallon of fruit drink.
i.e for 1 batch of the punch Tom needs gallon of fruit drink.
For 
batch of the punch Tom needs 
gallons of fruit drink.
Therefore, Tom will need gallons of fruit drink.
Here, the answer would be: 765 * 11 = 8415 [ About 8 thousands ]
In short, Your Answer would be Option C) <span>The answer should be about 8,000 yards. The student's answer is not correct.
Hope this helps!</span>
