20MA215 & PROBABILITY AND STATISTICS - Surprise Test II (2024-25)

Name of the Student

Register Number

• n-1
• (n_1-1,n_2-1)
• (n_2-1,n_1-1)
• n_1+n_2-2
• Option 5

For a random sample of 9 women, the average resting pulse rate is 76 beats per minute and the sample SD is s = 5. Then the standard error of the sample mean is

• 0.557
• 0.745
• 1.667
• 2.778

• 
• 
• 
• 

Goodness of fit of a distribution is tested by________

• t-test
• F-test
• Chi-square test
• z-test

F-test is used to test the significant difference between ______

• proportions
• means
• standard deviation
• variances

t-test is used to test the significant difference between ________

• proportions
• means
• standard deviation
• variances

Moment generating function of Chi-square distribution is_______

• 
• 
• 
• 

Given the 5 rows, 4 columns dimension for the contingency table, how many degrees of freedom will be the Chi- Square statistics have?

• 12
• 16
• 20
• 6