Help please I don’t get it
2 answers:
Answer:
12 m
Step-by-step explanation:
The area of a rectangle is length•width:
- length=<em>x</em>
- width=
- area=44
We can set up an equation and solve for <em>x</em>:
- <em>x</em>•
=44
- Divide– <em>x</em>=44/
- Make improper fraction– <em>x</em>=44/
- Same, change, reciprocal– <em>x</em>=44•3/11
- Multiply– <em>x</em>=12
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Answer:
0.9792
Step-by-step explanation:
Data provided in the question:
Average gross sales = $1,240
Standard deviation = $180
sample size = 40
Now,
standard deviation of sample average
=
=
= 28.46
Now,
z value for 1200 = = -1.4,
and,
p value for (z = -1.4) = 0.0808
therefore,
P(average < $1200) = 0.0808
Thus,
probability that the average over the next 40 weekdays will exceed $1,200
= 1 - 0.808
= 0.9792