STA301 Online Quiz No 02 Solution & Discussion Last Date:16122014
Opening Date and Time of Quiz Dec. 15, 2014 at 12:01AM
Closing Date and Time of Quiz Dec. 16, 2014 at 11:59PM
Instructions:
Read the following instructions carefully before attempting the Quiz No.1.
• Quiz will be based upon Multiple Choice Questions (MCQs) and it will cover Lesson no. 10 to Lesson no.19.
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Question # 1 of 10 (Start time: 06:44:02 PM) Total Marks: 1
In the method of moments, how many equations are required for finding two unknown population parameters?
Select correct option:
1
2 = answer
3
4
Question # 2 of 10 (Start time: 06:45:31 PM) Total Marks: 1
For statistical inference about the mean of a single population when the population standard deviation is unknown, the degrees for freedom for the t distribution equal n1 because we lose one degree of freedom by using the:
Select correct option:
Sample mean as an estimate of the population mean = answer
Sample size as an estimate of the population size
Sample proportion as an estimate of the population proportion
Sample standard deviation as an estimate of the population standard deviation
Question # 3 of 10 ( Start time: 06:47:31 PM ) Total Marks: 1
An urn contains 4 red balls and 6 green balls. A sample of 4 balls is selected from the urn without replacement. It is the example of:
Select correct option:
Binomial distribution
Hypergeometric distribution = answer
Poisson distribution
Exponential distribution
Question # 4 of 10 ( Start time: 06:48:17 PM ) Total Marks: 1
An estimator is always a:
Select correct option:
Statistic = answer
Random variable
Statistic and Random variable
Parameter
Question # 5 of 10 ( Start time: 06:49:50 PM ) Total Marks: 1
The Chi Square distribution is continuous distribution ranging from:
Select correct option:
Zero to infinity = answer
Minus infinity to plus infinity
Minus infinity to one
One to plus infinity
Question # 6 of 10 ( Start time: 06:51:10 PM ) Total Marks: 1
In a Geometric distribution, Maximum Likelihood Estimator (MLE) for proportion (P) is equal to:
Select correct option:
Sample mean
Reciprocal of the mean = answer
Sample variance
Reciprocal of the sample variance
Question # 7 of 10 ( Start time: 06:52:45 PM ) Total Marks: 1
Let X be a random variable with binomial distribution, that is (x=0,1,…, n). The Var[X] is:
Select correct option:
P
NP
NP (1p) = answer
Xnp
Question # 8 of 10 ( Start time: 06:54:23 PM ) Total Marks: 1
ANOVA stands for
Select correct option:
Analysis of variance = answer
Analysis of covariance
Analysis of variables
All above
Question # 9 of 10 ( Start time: 06:55:37 PM ) Total Marks: 1
If an estimator is more efficient then the other estimator, its shape of the sampling distribution will be
Select correct option:
Flattered
Normal
Highly peaked = answer
Skewed to right
Question # 10 of 10 ( Start time: 06:56:34 PM ) Total Marks: 1
How can we interpret the 90% confidence interval for the mean of the normal population?
Select correct option:
There are 10% chances of falling true value of the parameter
There are 90% chances of falling true value of the parameter = answer
There are 100% chances of falling true value of the parameter
All are correct
STA301 quiz check attachment .....
Sta301 quiz_2
Syeda Shahzadi Bukhari (BS 8th ) thanks for sharing ..keep it up









A letter is chosen at random from the word STATISTICS. The probability of getting a vowel is:
Putting the value of “k” which is greater than one in Chebyshev’s inequality we get the …………… proportion of values that lies in that range.
For a positively skewed distribution mid range is ……………. To/than the mid quartile range
Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even?
3/4
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