Answer: slope = 10/15
Step-by-step explanation: Identify two points in the graph
Make one of them (x1, y1) and the other (x2, y2)
Then use the slope equation:m= y2- y1/ x2 - x1
Answer:
The P-value for this test is P=0.00006.
Step-by-step explanation:
We have a matched-pair test, with a test statistic t=-14.9.
The degrees of freedom in a sample of 5 students is:
For a t=-14.9 and 4 degrees of freedom, a left-tail test will have a P-value of:
The claim is that the new unit on taking square roots is helping students to learn. This test concludes that there is statistical evidence to support the claim that the new unit is helping students to learn.
Answer:
Don't have enough information to be sure.
Step-by-step explanation:
Our total cost is C.
W represents the number of words you write.
But since we don't know <em>how much</em> the agency charges, we can't be sure what will be placed in front of W.
A) You need to use the binomial distribution, for which the probability of an event X is given by:
where:
n = total number of events
k = number of success we want
p = probability of success
Therefore, since the problem tells you that <span>X is the number of subjects who test positive for the disease, you will have:
</span><span>
= 1 </span>· 1 · 0.98³⁰
= 0.5455
Hence, the probability of none of the 30 subjects testing positive to the desease is
54.55%B) In a binomial distribution, the mean is given by the formula:
μ = n · p
= 30 · 0.02
= 0.6
And the standard deviation is given by the formula:
σ = √[n·p·(1-p)]
= √[30·0.02·0.98]
= √0.588
= 0.77
Hence, the
mean is 0.6 and the
standard deviation is 0.77<span>C) This test is not very viable: 30 subjects are a sample too small compared to the population (millions of people who need to be tested), the probability of finding that all the 30 subjects are healty is only a little bit over 50%, the standard deviation is too high compared to the mean, and 2% of false positive is a percentage too high to consider the test viable.</span>
Answer:
Step-by-step explanation:
X equals 58° because 58° and x are corresponding angles on parallel lines.