Interval
Estimation
Interval Estimation
Complication: Small Sample
o Sampling distribution must be normal.
o If the sample is small, then the population needs
to be normal (or nearly so).
o If the sample is small, then the population needs
to be normal (o
Assignment 2
A. True or False:
1) Expected monetary value (EMV) is the average or expected monetary outcome of
a decision if it can be repeated a large number of times.
2)
The difference in decision making under risk and decision making under
uncertainty
Mohamed Moath Mazen Mobayed - 120009413
Q-1. In a random sample consisting of 60 students of a college, 2 were smokers. In a
random sample consisting of 17 lecturers of the college, 5 were smokers. Test at 5% level
of significance that the proportion of s
Assignment-5
STAT-101
Q-1. In a random sample consisting of 60 students of a college, 2 were smokers. In a
random sample consisting of 17 lecturers of the college, 5 were smokers. Test at 5%
level of significance that the proportion of smokers among the s
ABDULLAH AL SAADI
Assignment-3
120001152
STAT-101
Q1. Define confidence interval and find the confidence interval for proportion.
(i). Engineers at a bottle-making factory are interested in estimating the percentage
of defective bottles manufactured by th
Assignment-5
STAT-101
Q1. Random samples of 200 men, all retired were classified according to
education and number of children is as shown below
Education Number
of
level
children
0-1 2-3 Over 3
Elementar
y
Secondary
and above
14
37
32
31
59
27
Test the h
Assignment-2- STAT-101
ABDULLAH AL SAADI
120001152
Marks-15
Q1. a. (Smoking and Coffee Drinking)
Coffee
No Coffee
Total
Smoker
60
40
100
Non-Smoker
115
85
200
Total
175
125
300
What is the probability that a randomly selected person from the sample either
Interval Estimation
STAT 101: Statistics
Interval Estimation
STAT 101: Statistics
Interval Estimation
Confidence Interval: Example
A sample of size 9 test scores from a standardized test. The sample has a mean
of 433 and standard deviation of 10. Predict