Mathematics, 31.03.2020 04:04 chgraypto

A confidence interval for a population mean . A. Estimates a likely interval for a population mean B. Estimates likelihood or probability C. Estimates the population standard deviation D. Estimates the population range

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Option A) Estimates a likely interval for a population mean is correctHence a confidence interval for a population mean is used to Estimates a likely interval for a population mean

Step-by-step explanation:

Given that a confidence interval for a population mean Estimates a likely interval for a population mean

For :

A confidence interval is a range of values that’s likely to include a population value with a certain degree of confidence.

It can be expressed as a the (percentage value) $\%$ where by a population mean lies between an upper and lower interval.

Therefore a confidence interval for a population mean is used to Estimates a likely interval for a population mean

Option A) Estimates a likely interval for a population mean is correct

Hence a confidence interval for a population mean is used to Estimates a likely interval for a population mean

Answer from: Quest

ddsf

step-by-step explanation:

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In a river, point a was found to contain 300 ppm (parts per million) of bioreactor waste, and point

Answer from: Quest

the system of inequity is

$y\leq -x+4$

$3y> x$

step-by-step explanation:

from the given graph it is noticed that we have two related lines. one is solid and another is dashed.

if a line passing through two points, then the equation of line is

$y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

the solid line passing through the points (0,4) and (4,0).

$y-4=\frac{0-4}{4-0}(x-0)$

$y=-x+4$

the related equation of solid line is $y=-x+4$ .

similarly, find the related equation of dashed line. the dashed liune passing through the points (0,0) and (3,1).

$y-0=\frac{0-1}{3-0}(x-0)$

$3y=x$

the related equation of dashed line is $3y=x$

from the given graph it is noticed that the point (0,1) lies on the shaded region, therefore the point (0,1) must be satisfied by the related equations.

check the related equations by the point (0,1).

$1=-0+4$

$1=4$

this statement is true if the sign of inequality is < instead of equality. since it is an solid line therefore the sign of inequality will be $\leq$ . the required inequality is

$y\leq -x+4$

similarly, check the second related equation.

$3(1)=0$

it is a dashed line, so this statement is true if the sign of inequality is > . the required inequality is

$3y> x$

15 points write a system of inequalities to represent the shaded portion of the graph

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A confidence interval for a population mean . A. Estimates a likely interval for a population mean B...