Answer:
k = 9
Step-by-step explanation:
Calculate the slope m using the slope formula and equate to 8
m =
with (x₁, y₁ ) = (- 1, 1) and (x₂, y₂ ) = (0, k)
m = = k - 1 = 8 ( add 1 to both sides )
k = 9
3/15 + 9/15 + 26/15=
2 answers:
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Answer:
A. We have extremely strong evidence to reject H0.
Step-by-step explanation:
Let P be the proportion of non-retirees in 2015 who did not think that Social Security would be able to pay a retirement benefit by the time that they retire.
According to the data null and alternative hypotheses should be:
: P=0.60
: P<0.60
Test statistics is -4.29 and p-value of the statistics is p<0.001
At every significance levels higher than 0.001, we can reject the null hypothesis since p<0.001.
Assuming that each marble can be picked with equal probability, we notice that there is a total of
marbles, of which 2 are red.
So, the probability of picking a red marble is
In fact, as in any other case of (finite) equidistribution, we used the formula