16% percent of the students paid MORE than Jane.
The mean(μ) of money spent on textbooks is 500
The standard deviation(σ) of money spent on textbooks is 50
Money paid by Jane for her books is $550
We will use this formula,
Ζ=x-μ/σ
To find: the percentage of students paid MORE than Jane for the textbooks
=?
Solution:
≤
=
Ζ≤
=1-P(Ζ≤ 1)
=1-0.8413
=0.1587
≈16%
Therefore, 16% percent (approx) of the students paid MORE than Jane.
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E^x is not zero for any finite value of x.
The number of values for which e^x is zero is zero.
Negative 3 and the product of 4 more than 7
At 4 months the amount spent is equal at 1,600.
600+250x
400x
250*4=1000+600=1600
400*4=1600