The distribution of exam scores (ranging from 0 - 100%) where the mean score is 75%, the standard deviation is 12%, and the medi an is 78% is most likely _________.
1 answer:
Answer:
Right skewed
Step-by-step explanation:
A skewed right distribution by definition is "one in which the tail is on the right side".Or on simple words when we have the following property:
Or equivalently:
A skewed left distribution by definition is "one in which the tail is on the left side". Or on simple words when we have the following property:
Or equivalently:
And for this case we can see that
So on this case the best description for this distribution is right skewed.
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Step-by-step explanation:
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Answer:
a
Step-by-step explanation:
Answer:
Step-by-step explanation:
Your expression is
Here's how I would simplify it.
So use cancelation multiply first equation by 2 2x+8y=10 times 2 4x+16y=20 now add 4x+16y=20 <u>-4x-9y=-13 + </u>0x+7y=7 7y=7 divide by 7 y=1 subsittue 2x+8y=10 2x+8(1)=10 2x+8=10 subtract 8 from both sides 2x=2 divide by 2 x=1 x=1 y=1 <u />