A bus leaves a bus station and picks up two people at the first stop . At the second stop , the bus picks up three more people .
At the third stop, all of the passengers get off the bus . Emma sketched the graph below to represent the situation.
What error did emma make in her sketch ?
A) her sketch should not include horizontal lines
B) her sketch should have curves instead of lines .
C) her sketch does not show the correct number of stops .
D) her sketch shows the number of people decreasing and then increasing.
What error did emma make in her sketch ?
A) her sketch should not include horizontal lines
B) her sketch should have curves instead of lines .
C) her sketch does not show the correct number of stops .
D) her sketch shows the number of people decreasing and then increasing.
1 answer:
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Answer:
16.7% of GMAT scores are 647 or higher
Step-by-step explanation:
The Empirical Rule states that 68% of the values are within 1 standard deviation of the mean(34% above, 34% below). It also considers that 50% of the values are above the mean and 50% are below the mean.
In this problem, we have that the mean is 547 and that the standard deviation
is 100.
a. What percentage of GMAT scores are 647 or higher?
647 is 1 standard deviation above the mean.
So, 50% of the values are below the mean. Those scores are lower than 647.
Also, there is the 34% of the values that are above the mean and are lower than 647.
So, there is a 50% + 34% = 84% percentage of GMAT scores that are 647 or lower.
The sum of the probabilities must be 100
So, the percentage of GMAT scores that are 647 or higher is 100% - 84% = 16%.
Answer:
30!
Step-by-step explanation:
Add all sides.
