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3241004551 [841]
2 years ago
11

Steven has $10. Each week he earns $2.

Mathematics
2 answers:
podryga [215]2 years ago
8 0

Answer:

(a) 2*10 = 20

10+20=30

(b) ceil((25-10)/2) = 8

My name is Ann [436]2 years ago
6 0

Answer:

$30 at the end of 10 weeks

7.5 weeks, or 8 (rounded)

Step-by-step explanation:

10*2=20

10+20=30

10+2x=25

2x=25-10

2x=15

x=7.5

7.5 weeks, or 8 (rounded)

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Step-by-step explanation:

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(*)

This value can be computed in Excel with

<em>NORMINV(1-0.025,0,1)</em>

and in OpenOffice Calc with

<em>NORMINV(1-0.025;0;1)</em>

b)

Since 30 is not in the 95% confidence interval, there is a 95% probability that 30 is not the true mean WEP

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