alexseyreyes

27.04.2021 • 

Mathematics

The average lifetime of circulated $1 bills is 18 months. A researcher believes that the average lifetime is not 18 months. He researched the lifetime of 50 $1 bills and found the average lifetime was 18.8 months. The population standard deviation is 2.8 months. At a 2% significance level, can it be concluded that the average lifetime of a circulated $1 bill differs from 18 months

Ответ:

roudi61

09.04.2021

Mathematics

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2 1/8 = h

2 1/2 = k

2 5/8 = L

1 7/8 = g

1 5/8 = e

2 3/4 = m

1 1/2 = d

2 1/4 = I

1 3/8 = c

2 7/8 = n

1 1/8 = a

Step-by-step explanation:

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