Answer:
Yes
Step-by-step explanation:
rectangle a has a 2 to 3 ratio in length and width same with rectangle b
Answer: B. This student's test grade was 2.4 standard deviations above the mean test grade.
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Explanation:
The z score tells us how far away the raw score is from the mean. This distance is in terms of standard deviations.
- z = 1 means we're 1 standard deviation above the mean
- z = 2 means we're 2 standard deviations above the mean
and so on.
Negative z scores indicate the raw score is below the mean.
- z = -1 means we're 1 standard deviation below the mean
- z = -2 means we're 2 standard deviations below the mean
and so on. So that's why z = 2.4 indicates the students test grade was 2.4 standard deviations above the mean.
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Answer: 47/40 or 1 7/40
Step-by-step explanation: Cross multiply for the numerator and multiply the denominators for the denominator, so 3 * 5 + 4 *8/ 8*5
