AFTER HALLOWEEN, PUMPKINS WERE 25% OFF. AMY BOUGHT 2 BIG PUMPKINS THAT WERE ORIGINALLY $7 EACH. HOW MUCH DID SHE SPEND (BEFORE T
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Answer:
Solution By Gauss jordan elimination method
x = 3, y = 2 and z = 4
Answer:
75% of the data will reside in the range 23000 to 28400.
Step-by-step explanation :
To find the range of values :
We need to find the values that deviate from the mean. Since we want at least 75% of the data to reside between the range therefore we have,
Solving this, we would get k = 2 which shows the value one needs to find lies outside the range.
Range is given by : mean +/- (z score) × (value of a standard deviation)
⇒ Range : 25700 +/- 2 × 1350
⇒ Range : (25700 - 2700) to (25700 + 2700)
Hence, 75% of the data will reside in the range 23000 to 28400.