Answer:
She should offer a guarantee of 6.24 years.
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean
and standard deviation
, the zscore of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:

If she is willing to replace 3% of the motors that fail, how long a guarantee (in years) should she offer?
This is the value of X when Z has a pvalue of 0.03. So it is X when Z = -1.88. So




She should offer a guarantee of 6.24 years.
Answer: Patrick from Bikini bottoms!
Step-by-step explanation:
Answer:
K= -5
Steps:
<u>P</u><u>u</u><u>t</u><u> </u><u>t</u><u>o</u><u>g</u><u>e</u><u>t</u><u>h</u><u>e</u><u>r</u><u> </u><u>l</u><u>i</u><u>k</u><u>e</u><u> </u><u>t</u><u>e</u><u>r</u><u>m</u><u>s</u>
-5k + 2k = 40 - 25
-3k = 40 - 25
-3k = -15
<u>D</u><u>i</u><u>v</u><u>i</u><u>d</u><u>e</u><u> </u><u>b</u><u>o</u><u>t</u><u>h</u><u> </u><u>s</u><u>i</u><u>d</u><u>e</u><u>s</u><u> </u><u>b</u><u>y</u><u> </u><u>-</u><u>3</u>
Then you get your answer.
Answer:
12755 base-8
Step-by-step explanation:
You’re welcome :) please brainliest me btw.
Answer:
7 1/3
Step-by-step explanation: