Question

BRAINLIEST AND 25 POINTS ASAP HELP!!!

Answer 1

The probability that a transmission will last less than 14 years is 5%

Step-by-step explanation:

Given

Mean = 16 years

SD = 1.2 years

We have to find the probability that a transmission will last less than 14 years

First of all we have to find the z-score of the value

Z-score is given by:

$z = \frac{Value-mean}{SD}\\= \frac{14-16}{1.2}\\= \frac{-2}{1.2}\\= -1.6666$

We will use the z-score table to find the probability of being less than 14

So,

From z-score table we get the value for -1.6666

P(z = -1.666) = 0.04846

= 0.04846* 100

= 4.846

Rounding off to nearest percentage

5%

Hence,

The probability that a transmission will last less than 14 years is 5%

Keywords: Probability, z-score

Learn more about probability at:

• brainly.com/question/8358304
• brainly.com/question/8301701

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Answer 2

Answer:

Step-by-step explanation:

i belive it is c 30%