Flashcards in Test 3 Deck (15):
1
For the normal distribution there is___mode and the median and mean___
one
are equal
2
The standard normal distribution assumes U=__and o=___
0
1
3
The T distribution is identical to the normal distribution except it does not assume o=___
1
4
Equal
5
The X2 distribution is used to approximate the populations___,___
Varience
Standard Deviation
6
When the population standard deviation is known, for a confidence interval we use?
Z Table
7
When the population standard deviation is unknown for a confidence interval we use?
T Table
8
Any confidence interval u assumes the population is normally distributed or
N>30

9
Any confidence interval u assumes the population is normally distributed or (If N>30 is not present)
None of the above
10
The expression
margin of error
11
In general for a confidence interval as the level of confidence decreases?
the width interval decreases
12
In general for a confidence interval as the level of confidence increases?
The width interval increases
13
Amoung other limits the central limit theorem tells us
sample size increase sample approaches normal
14
For any event X, ___
0
15