Answer:
3k
Step-by-step explanation:
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Answer:
option 2
Step-by-step explanation:
I hope that's the answer cause I'm pretty sure it is
Answer:

Step-by-step explanation:
we have

we know that

In this problem

substitute in the formula


(0,8)+(7,-52) eso es la problema
Answer:
Option D) $275
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = $235
Standard Deviation, σ = $20
We are given that the distribution of amount of money spent by students is a bell shaped distribution that is a normal distribution.
Formula:

We have to find the value of x such that the probability is 0.975
Calculation the value from standard normal z table, we have,

Approximately 97.5% of the students spent below $275 on textbook.