For Halloween, 1/4 of the candy sold was chocolate. Of the chocolate sold, 7/8 was made by Nestle. What fraction of all the cand
1 answer:
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Answer:
4.27%
Step-by-step explanation:
We have been given that college students average 8.6 hours of sleep per night with a standard deviation of 35 minutes. We are asked to find the probability of college students that sleep for more than 9.6 hours.
We will use z-score formula to solve our given problem.
z = z-score,
x = Random sample score,
= Mean,
= Standard deviation.
Before substituting our given values in z-score formula, we need to convert 35 minutes to hours.
Now, we need to find .
Using formula , we will get:
Using normal distribution table, we will get:
Therefore, 4.27% of college students sleep for more than 9.6 hours.
Answer: The correct option is A.
Explanation:
The given equation is,
Multiply both sides by 2.
Subtract both sides by 8x.
This statement is false for any value of x, therefore the system of equation have no solution and option A is correct.