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Sampling Distributions 2 Flashcards | StudBud

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What does the number 79 represent?

See below.

Sampling Distributions 2

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#Statistics #Mean #Proportions #Samples

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Questions 10

Answers

1
See below.
A
B
C
B and C
2
What does the number 79 represent?
a parameter
a sample
a sampling distribution
a statistic
3
See below.
B or C
B
A
C
4
See below.
No because n ≤ 30
Yes because there was an SRS
No because 25(0.27) = 6.75 which is not more than 10
Yes because there are at least 310 Americans
5
Read and answer.
low bias
high bias
low variability
high variability
6
To reduce the variability of estimates from an SRS, you should...
use a percent, not a count
decrease the sample size
use a stratified random sample
increase the sample size
7
See below.
A and C
B
A
C
8
For a sampling distribution of means, what allows us to assume Normalcy?
10n < N
SRS
np ≥ 10 and n(1–p) ≥ 10
Central Limit Theorem
9
The variability of a statistic is described by
the amount of bias present
probability calculations
the spread of the sampling distribution
the spread of the population
10
If we take repeated SRSs from a population, we expect...
the same values of the statistic for each sample
the sampling distribution to be the same as the population
a different value of the parameter for each sample
the values of the statistics will vary with each sample