Answer:
The proportion of these light bulbs that will last less than the advertised time is 18.94% or 0.1894
Step-by-step explanation:
The first thing to do here is to calculate the z-score
Mathematically;
z-score = (x - mean)/SD
= (1500-1550)/57 = -50/57 = -0.88
So the proportion we will need to find is;
P( z < -0.88)
We shall use the standard score table for this and our answer from the table is 0.1894 which is same as 18.94%
Answer:
19.105 in if c is the hypotenuse
5.196 in if c is a leg
Step-by-step explanation:
The Pythagorean theorem is used for this.
If c is the hypotenuse, ...
... c² = 13² + 14² = 365
... c = √365 ≈ 19.105 . . . . in
_____
If c is a leg, ...
... 14² = 13² + c²
... c² = 196 -169 = 27
... c = √27 ≈ 5.196 . . . . in
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Answer:
D. 1 x 10^2 times
Step-by-step explanation:
First you have to get all the values on the other side of y. To do that subtract 2x, then divide the values on the right by 3. You will be left with y=3-2x/3.
