Answer:
The company should promote a lifetime of 3589 hours so only 2% burnout before the claimed lifetime
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:

What lifetime should the company promote for these bulbs, whereby only 2% burnout before the claimed lifetime?
This is the value of X when Z has a pvalue of 0.02. So it is X when Z = -2.055.




The company should promote a lifetime of 3589 hours so only 2% burnout before the claimed lifetime
Answer:
14
pounds
Step-by-step explanation:
Here we have to use multiplication.
Yamin purchased 6 heads of cabbage.
The weight of each cabbage = 2 
First let's convert the mixed fraction 2
to improper fraction
2
= 
The weight of 6 heads of cabbage = 6 x 
= 114/8
= 14 
We can reduce 2/8 = 1/4
= 14 
Thank you.
78.33 (3 rounds down)
0.0605 (5 rounds up)
288.60 (8 rounds up, but there is a nine, so nine becomes 0 and 5 becomes 6)
0.101 (8 rounds up)
Answer:
39109.52
Step-by-step explanation:
calculator
The diagonal of a square is always √2 times the length of the side. Your diagonal length is
8√2
11.31 . . . . rounded to the nearest hundredth