University of Colorado Boulder Standard Deviation and Confidence Interval Quiz quick and easy multiple choice for intro to statistics. 13 questions just nu

University of Colorado Boulder Standard Deviation and Confidence Interval Quiz quick and easy multiple choice for intro to statistics. 13 questions just number and answer them based on photos attached below V
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Question 3
1 pts
The number of standard deviations that a given raw score is above or
below the mean is referred to as a
O Z score
O mean
O frequency distribution
O variance
&& ?
Question 4
1 pts
Parameters are associated with
associated with
; whereas, statistics are
O populations; samples
samples; populations
cases: samples
O populations: datasets
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What percentage of the area under the normal curve falls between 21
standard deviations?
TE
At
0
O 68.26
? 99.72
O 95.46
S
O 20.00
w
Question 2
1 pts
What percentage of the area under the normal curve falls between +2
standard deviations?
O 95.46
? 99.72
O 68.26
O 20.0
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Question 5
1 pts
The standard error of the sampling distribution for a mean is calculated precisely by
using which two quantities?
O Population standard deviation and sample size
O Sample mean and population mean
O Sample mean and sample standard deviation
O Population standard deviation, and sample mean
Question 6
1 pts
A theoretical probability distribution of all possible values for the statistic in which
we are interested is referred to as a
sampling distribution
O sample
O population
sampling frequency
tory
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Question 9
1 pts
% of all random samples of size “N” from a population will
have a mean that falls within +1.96 standard errors of the true
population mean.
O 95
O 68
? 99
O 100
D
Question 10
1 pts
If the value of the sample standard deviation increases, what happens
to the confidence interval?
It becomes wider
It becomes more precise
O It does not change
O It narrows
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If all possible random samples of size N are drawn from a population
with a mean of uY and a standard deviation of oy, then as N becomes
larger, the sampling distribution of sample means becomes
approximately normal with a mean of uy and a standard deviation of
ó?. This statement is known as the
O central limit theorem
O sampling frame
sampling distribution
O central sampling theorem
Question 8
1 pts
When calculating a confidence interval, the likelihood that the interval
will contain the population parameter is referred to as
O the confidence level
O the upper bound
O the lower bound
O the margin of error
20
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