What is the fraction (in simplest form) for 420%? Thanks for the help
1 answer:
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Answer:
The probability that a light bulb of that brand lasts between 1175 hr and 1610 hr is 0.8524.
Step-by-step explanation:
Given : Suppose a brand of light bulbs is normally distributed, with a mean life of 1400 hr and a standard deviation of 150 hr.
To find : The probability that a light bulb of that brand lasts between 1175 hr and 1610 hr ?
Solution :
Applying z-score formula,
where, is population mean
is standard deviation
For x=1175 hour,
For x=1610 hour,
The required probability is,
Using z table, the values are
The probability that a light bulb of that brand lasts between 1175 hr and 1610 hr is 0.8524.
The solution of the absolute inequality |y + 8| ≤ 2 is -10 ≤ y ≤ -6
<h3>What is an equation?</h3>An equation is an expression that shows the relationship between two or more numbers and variables.
An independent variable is a variable that does not depends on other variable while a dependent variable is a variable that depends on other variable.
Given the equation:
|y + 8| ≤ 2
Hence:
y + 8 ≤ 2; and -(y + 8) ≤ 2
y ≤ -6 and y ≥ -10
The solution of the absolute inequality |y + 8| ≤ 2 is -10 ≤ y ≤ -6
Find out more on equation at: brainly.com/question/2972832
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