Question 2: What is the difference between the calculation of a t score and z sc
ID: 3442245 • Letter: Q
Question
Question 2: What is the difference between the calculation of a t score and z score for hypothesis testing ?
A t score is used with a small sample and uses a population standard deviation in the denominator. A z score is used with a large enough sample and uses a sample standard deviation in the denominator.
A t score is used with a small sample and uses a sample standard deviation in the denominator. A z score is used with population data or can be used with a large enough sample and uses a population standard deviation in the denominator.
A t score is used with a large sample. A z score is used a with a small sample.
A z score is used with a small sample and uses a sample standard deviation in the denominator. A t score is used with population data or can be used with a large enough sample and uses a population standard deviation in the denominator.
1.A t score is used with a small sample and uses a population standard deviation in the denominator. A z score is used with a large enough sample and uses a sample standard deviation in the denominator.
2.A t score is used with a small sample and uses a sample standard deviation in the denominator. A z score is used with population data or can be used with a large enough sample and uses a population standard deviation in the denominator.
3.A t score is used with a large sample. A z score is used a with a small sample.
4.A z score is used with a small sample and uses a sample standard deviation in the denominator. A t score is used with population data or can be used with a large enough sample and uses a population standard deviation in the denominator.
Explanation / Answer
option (2) is the most appropriate.
Actually we use z when population std dev is known. If sample size is very large, we can approximate population std dev with sample std dev. Otherwise t is used.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.