Answer:
For every 1000 pairs sold, the manufacturer expect to replace 239 pairs for free.
Step-by-step explanation:
Given:
Mean (μ) = 2.2, Standard deviation(S.D) (σ) = 1.7 years and x = 1 (1 year)
Let's find the Z score.
Z = 
Now plug in the given values in the above formula, we get
Z = 
Now we have to use the z-score table.
The z-score for 0.71 is 0.2611
Since it z is negative, so we subtract 0.2611 from 0.5000
0.5000 - 0.2611 = 0.2389
Percentage = 0.2389 × 100 = 23.89%
To find replaces for 1000 pairs, we need to multiply 23.89% by 1000
= 
= 239
The cannot be in decimal, when we round off to the nearest whole, we get
239
It's 21.125 hope this works good luck ;)
Answer:
Improper fraction for 8 4/25 is 204/25
Step-by-step explanation:
The numbers in the mixed fraction are defined as follow
8 = whole number
4 = numerator
25 = denominator
Multiply the whole number by the denominator
8 × 25 = 200
Add the product from Step 1 to the numerator
200 + 4 = 204
Write answer from Step 2 over the denominator
204/25
The mixed number 8 4/25 converted to improper fraction is therefore :
Answer:
they're all 0
Step-by-step explanation:
N/A