Answer:
4/5
Step-by-step explanation:
1. Do 1/2 x 0.6 which is 0.3 or 3/10
2. Add 3/10 to 1/2 which is 4/5
Answer:
<h2>6.63</h2>
Step-by-step explanation:
Standard error of the mean is expressed as shown below.
SE = S/√n where;
S is the standard deviation
n is the sample suze
Given parameters
Standard deviation = $23.90
sample size = 13
Required
Standard error of the mean for this distribution.
Substituting the given value into the formula we have;
SE = 23.90/√13
SE = 23.90/3.6056
SE = 6.6286
<em>Hence the approximate standard error of the mean for this sample is 6.63</em>
<span>No, it is not a valid inference because she asked all 22 students in her science class instead of taking a sample of the students in her school
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85
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Direct variation is of the form y=kx. We are given the point (8, -4) so we can solve for k, the constant of variation...
-4=8k, divide both sides by 8
-4/8=k
k=-0.5, so our equation is:
y=-0.5x,
<span>I am assuming the gender of each child is independent of the other.
Then the information about the first three children is irrelevant.
So then the probability of fourth child being boy is 1/2, since </span><span>boys and girls are equally likely</span><span>.
Hope this helps.</span>