Answer:
"Rong"? I believe you need to re-do English class.
Step-by-step explanation:
Answer:
A. 0.62%
B. 28 months
Step-by-step explanation:
A. Calculation for what percentage of total production will the company expect to replace
Let x represents the distribution of life times
Let mean be 34 months
Let standard deviation be 4 months.
Based on the information the full refund on any defective watch for 2 years will represent 24 months (2 years *12 months).
First step
P(X<24)
= p(x-mean/ standard deviation< 24-34/4)
= p(z< -10/4)
=P(z<-2.5)
Second step is to Use the excel function to find NORMSDIST(z) of P(z<-2.5)
NORMSDIST(z)=0.62%
Therefore the percentage of total production will the company expect to replace will be 0.62%
B. Calculation for how much the guarantee period should be
First step
P(X<x)=0.06
P(x-Mean/Standard deviation < x-34/4) = 0.06
Second Step is to Use excel function
P(z<x-34/4) = (Normsinv(0.06)
x-34/4 = -1.555
Now let calculate how much the guarantee period should be
x = -6.22+34 months
x = 27.78
x = 28 months (Approximately)
Therefore the guarantee period should be 28 months
Answer:
875 ft²
Step-by-step explanation:
Given 2 similar rectangles with ratio of sides = a : b, then
ratio of areas = a² : b²
Here the ratio of sides = 5 : 25 = 1 : 5, thus
ratio of areas = 1² : 5² = 1 : 25
Thus the area of EFGH is 25 times the area of ABCD
area of EFGH = 35 × 25 = 875 ft²
Answer:
10
Step-by-step explanation:
We can use the distributive property to get:
Therefore, the blank is 10.
10x-61/12 is the difference of (7x-
) - (-3x + 
).
<h3>What is Expression?</h3>
An expression is combination of variables, numbers and operators.
The given expression is (7x-) - (-3x + )
7x-+3x-
7x-20/3+3x-19/4
Add the variable terms and constant terms.
10x-20/3-19/4
The LCM of 3 and 4 is 12/
10x-4-57/12
10x-61/12
Hence, 10x-61/12 is the difference of (7x-) - (-3x + ).
To learn more on Expressions click:
brainly.com/question/14083225
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