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castortr0y [4]
3 years ago
9

In repeated samples, approximately 99% of all differences in sample means will fall within the bounds of the interval already co

mputed.
a. True
b. False
Mathematics
1 answer:
Inga [223]3 years ago
5 0

Answer:

a) True

Step-by-step explanation:

Repeated samples are a type of samples that are used to determine the features or characteristics or a given set of data.

In repeated samples, statistical techniques are applied whereby two samples that have similar characteristics are tested or analysed under different conditions.

Repeated samples can also be called matched or paired samples.

In repeated samples , we have what we refer to as confidence intervals. These are intervals whereby the true and correct value of certain parameters such as mean, the standard deviation of a given data or distribution is determined. We have confidence interval levels of 90%, 95% and 99%.

In repeated samples, approximately 99% of all differences in sample means will fall within the bounds of the interval already computed.

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Answer:

121

Step-by-step explanation:

Given

f(x) = - (x + 8)(x - 14) ← expand factors using FOIL

     = - (x² - 6x - 112) ← distribute by - 1

     = - x² + 6x + 112

Given a quadratic in standard form. y = ax² + bx + c : a ≠ 0

Then the x- coordinate of the vertex is

x_{vertex} = - \frac{b}{2a}

f(x) = - x² + 6x + 112 ← is in standard form

with a = - 1 and b = 6, thus

x_{vertex} = - \frac{6}{-2} = 3

Substitute x = 3 into f(x) for corresponding value of y

f(3) = - (3)² + 6(3) + 112 = - 9 + 18 + 112 = 121

vertex = (3, 121 ) ← with y = 121

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To answer this question you need to find the percentage 12 is of 16. To do this you would divide 12 by 16 to get 0.75, then multiply it by 100 to get 75%.

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