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Qualified Medicare Beneficiary (QMB) 3200 exam 4 test preps with All Questions and 100% Correct Answers $10.00
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Qualified Medicare Beneficiary (QMB) 3200 exam 4 test preps with All Questions and 100% Correct Answers
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Qualified Medicare Beneficiary (QMB) 3200 exam 4 test preps with All Questions and 100% Correct Answers

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Document information

  • October 21, 2024
  • 150
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • qualified medicare beneficiary qmb 3200 exam 4
  • when drawing a sample from a population the goal

Written for

  • Qualified Medicare Beneficiary 3200
  • Qualified Medicare Beneficiary 3200

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164 Multiple choice questions

Term 1 of 164
When drawing a sample from a population, the goal is for the sample to:

independent of each other

reduce the standard error of the mean

judgement sampling

match the targeted population

Term 2 of 164
In order to use the output from a multiple regression model to perform the ANOVA test on the
difference among the means of four populations, how many dummy variables do we need to
use to indicate treatments?

normal


three

-2;2

R^2

Term 3 of 164
We can reduce the margin of error in an interval estimate of p by doing any of the following
except:

sampling distribution of pbar

overall significance


increasing the planning value p* to .5.

best-subsets regression

,Term 4 of 164
In multiple regression analysis:

there can be several independent variables, but only one dependent variable.


normally distributed

reduce the standard error of the mean


as the values of x get larger, the ability to predict y becomes less accurate.

Term 5 of 164
The effect of two independent variables acting together is called:

regression model

t distribution

sample mean


interaction

Term 6 of 164
The term in the multiple regression model that accounts for the variability in y that cannot be
explained by the linear effect of the p independent variables is the:

error term, ε


multicollinearity

t distribution

good predictors

,Term 7 of 164
In best-subsets regression, Minitab can be used to provide output that identifies the two best
one-variable estimated regression equations, the two best two-variable estimated regression
equations, the two best three-variable estimated regression equations, and so on. What
criterion is used in determining which estimated regression equations are best?

R^2

zero

n-2


n-1

Term 8 of 164
When constructing a confidence or a prediction interval to quantify the relationship between
two quantitative variables, what distribution do confidence and prediction intervals follow?

t distribution


prediction interval

t distribution with 29 degrees of freedom.

do not reject H0

Term 9 of 164
If the value of y in time period t is related to its value in time period t - 1, we say that:

unlikely as that provided by the sample.

standard error of the mean decreases


first-order autocorrelation is present

sample statistic

, Term 10 of 164
When computing the sample size needed to estimate a proportion within a given margin of
error for a specific confidence level, what planning value of p should be used when no
estimate of p is available?

confidence interval

The numerator degrees of freedom equals the number of predictors added to the
model. The denominator degrees of freedom is n—p—1.


t distribution

.5

Term 11 of 164
For a fixed confidence level and population standard deviation, if we would like to cut our
margin of error to 1/3 of the original size, we should take a sample size that is:

using .95 as an estimate

first-order autocorrelation is present

nine times as large as the original sample size.

1/y as the dependent variable instead of y.

Term 12 of 164
Which of the following statements about the backward elimination procedure is false?

at least as small as that provided by the sample.

it begins with zero independent variables

can be either positive or negative

the same for all values of x1, x2,..., xp.

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