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LenaWriter [7]
2 years ago
8

Help me will give brain

Mathematics
1 answer:
Marat540 [252]2 years ago
3 0

Answer:

Umm sure what you want..

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Suppose you do an analysis of the starting salaries of 100 recent Lehman graduates. You find that the average starting salary is
madreJ [45]

Answer:

a) (59180,60820)

b) (59020,60980)        

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $60,000

Standard Deviation, σ = $5,000

Sample size, n = 100

a) 90% critical values

\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.10} = 1.64

60000 \pm 1.64(\frac{5000}{\sqrt{100}} ) = 60000 \pm 820 = (59180,60820)

b) 95% critical values

\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

60000 \pm 1.96(\frac{5000}{\sqrt{100}} ) = 60000 \pm 980= (59020,60980)

5 0
3 years ago
What is the rate for 4 shirts for $32:00
EastWind [94]
The answer should be $8 if you are trying to find the unit rate. All you have to do is divide 32 by 4 and you get 8. Hope that helped.
3 0
3 years ago
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Can someone help me please
AfilCa [17]

18 are comedies

27 are action adventures

<em><u>27 is the answer</u></em>

3 0
3 years ago
What is the sum of 3/4 × 1/2 ?
Tatiana [17]
3/4 x 1/2 = 3/8

Hehehe
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3 years ago
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Answer this question if u are 100% sure
Julli [10]
The other side is x^2+9   
x^3-27/x-3= x^2+9
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