In a normal distribution, the median is the same as the mean (25.3). The first quartile is the value of

such that

You have

For the standard normal distribution, the first quartile is about

, and by symmetry the third quartile would be

. In terms of the MCAT score distribution, these values are


The interquartile range (IQR) is just the difference between the two quartiles, so the IQR is about 8.8.
The central 80% of the scores have z-scores

such that

That leaves 10% on either side of this range, which means

You have

Converting to MCAT scores,


So the interval that contains the central 80% is

(give or take).
slow a its 7
Step-by-step explanation:
Answer:
It is in its simplest form
Step-by-step explanation:
If its meaning making a profit after the $300 then:
540+300=840
840/24= 33.60
They would charge $33.60 per necklace.
If you were meaning a profit of $540 total then:
540/24=22.5
They would charge $22.50 per necklace.
Answer:
1 pound is 453.6 grams appox
Step-by-step explanation:
to calculate how many grams is 2 pounds, u can do 2x453.6 which would be 907.2
for all others i have an attached file :)