In Mr.Johanessen's class, 1/4 of the students failed the exam. Of the remaining class, 1/3 scored an A. What fraction of the who
1 answer:
so a whole is same/same, in this context is 4/4 = 1, or four fourths.
now, we know 1/4 failed, that means 4/4 - 1/4 = 3/4 didn't fail, so 3/4 passed.
from that remaining 3/4, how many got an A? well 1/3, how much is 1/3 of 3/4? well is just their product, .
so 1/4 of the remaining 3/4 got an A, that means 3/4 of the remaining 3/4 did NOT get an A.
how much is 3/4 of 3/4? well, is just their product.
You might be interested in
Answer:
The standard deviation for the number of defective parts in the sample is 1.88.
Step-by-step explanation:
The sample is with replacement, which means that the trials are independent, and thus, the binomial probability distribution is used to solve this question.
Binomial probability distribution
Probability of exactly x successes on n repeated trials, with p probability.
The expected value of the binomial distribution is:
The standard deviation of the binomial distribution is:
68 defective out of 400:
This means that
From the shipment you take a random sample of 25.
This means that
Standard deviation for the number of defective parts in the sample:
The standard deviation for the number of defective parts in the sample is 1.88.
So... if you notice the picture below, based on the given vertices, is a hyperbola with a vertical traverse axis
meaning for the equation, the fraction with the "y" variable is the positive fraction, thus
so... what' the point h,k for the center? well, just take a peek at the graph, the center is half-way between both vertices, that's h,k
what's the "a" component or the traverse axis... well, is the distance from one vertex to the center, notice the picture, notice how many units from either vertex to the center, that's "a"
now.. what's "b"? well, "b" comes from the conjugate axis, or the other runnning over the x-axis hmm the smaller one in this case.... well, we dunno what "b" is
however, we know the distance from either focus, to the center of the hyperbola, and that distance "c", is
notice the picture, notice the distance from either focus to the center, that's the distance "c", thus
that'd be "b"
bearing in mind that
meaning for the equation, the fraction with the "y" variable is the positive fraction, thus
so... what' the point h,k for the center? well, just take a peek at the graph, the center is half-way between both vertices, that's h,k
what's the "a" component or the traverse axis... well, is the distance from one vertex to the center, notice the picture, notice how many units from either vertex to the center, that's "a"
now.. what's "b"? well, "b" comes from the conjugate axis, or the other runnning over the x-axis hmm the smaller one in this case.... well, we dunno what "b" is
however, we know the distance from either focus, to the center of the hyperbola, and that distance "c", is
notice the picture, notice the distance from either focus to the center, that's the distance "c", thus
that'd be "b"
bearing in mind that