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3 years ago

A skydiver falls 125 feet in 5 seconds. How far does the skydiver fall per second?

Mathematics

2 answers:

lorasvet [3.4K]3 years ago

4 0

Answer:

25 feet in one second

Step-by-step explanation:

125 divided by 5 is 25

Illusion [34]3 years ago

4 0

Answer:

25 feet per second

Step-by-step explanation:

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A tire manufacturer knows that 5% of tires contain a defect, and the presence of a defect is independent from tire to tire.

saul85 [17]

The probability that if 5 tires are inspected, exactly 2 have a defect is 0.021

<h3>How to calculate the probability</h3>

The given parameters are:

$p = 5\%$ --- the proportion that contains defect

$n =5$ --- the sample size

$r =2$ -- the selected sample

The probability is then calculated as:

$P(x =r) = ^nC_r * p^r * (1 - p)^{n-r}$

So, we have:

$P(x =2) = ^5C_2 * (5\%)^2 * (1 - 5\%)^{5-2}$

$P(x =2) = 10 * (5\%)^2 * (1 - 5\%)^3$

$P(x =2) = 0.021$

Hence, the probability that if 5 tires are inspected, exactly 2 have a defect is 0.021