The standard deviation of the marks obtained in mathematics by 109 students is found to be 12. The standard error of the estimator of the population mean for a random sample of size 9 using SRSWOR is:
A. 3.58
B. 3.45
C. 3.85
D. 4.00
Answer:C
The standard deviation of the marks obtained in mathematics by 109 students is found to be 12. The standard error of the estimator of the population mean for a random sample of size 9 using SRSWOR is:
A. 3.58 B. 3.45 C. 3.85 D. 4.00