2 years ago

HELP ASAP PLZZZ ON 2.a.

Mathematics

1 answer:

Alexxandr [17]2 years ago

8 0

Answer:

$0.8425 for 1 ounce

Step-by-step explanation:

divide $6.74 by 8 to get your answer

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3 years ago

An auto mechanic knows the average time it takes to replace a defective car radiator is 70 minutes with a standard deviation of

horsena [70]

Given that the average time it takes to replace a defective car radiator is 70 minutes with a standard deviation of 12 minutes.

The 90% confidence interval of a random sample of 50 is given by

$90\% \ C.I.=70\pm1.645 \frac{12}{\sqrt{50}} \\ \\ \Rightarrow 70+1.645 \frac{12}{\sqrt{50}} \ and \ 70-1.645 \frac{12}{\sqrt{50}}$