lecture 2 confidence and significance Flashcards
1
Q
sampling error is differnce dued to _____.
A
random variation
2
Q
systematic error definition
A
differnce in way of chossing sample
3
Q
the distributi8on of the estimated means is called ____
A
sampling distribution of the mean
4
Q
central limit theorem is when the sampling distribution of the statistic mean become
A
normal distribution
5
Q
when the histrogram is skewed, how we report it?
A
mean
6
Q
Two researchers used two different samples and studied the expected hours of sleep in the population. Both samples had the same mean 8.5 and standard deviation of 2 hours. The 95% confidence interval for Researcher A was [7, 9] and the 95% confidence interval for Researcher B was [6, 11]. Which of the two researchers had the larger sample size?
Select one:
a.
Researcher A
b.
Researcher B
A
a
7
Q
A
