Question 1
The T distribution is used when you have the standard deviation of the population (σ).
True
False
Solution:
When standard deviation of the population is known, we use standard normal distribution (z distribution).
When standard deviation of population is unknown then we use its sample estimate called as sample standard deviation and denoted by s, thus in this case we use T distribution.
Thus given statement is False.
Question 1 The T distribution is used when you have the standard deviation of the population...
V ide Question 1 The T distribution is used when you have the standard deviation of the population (o). O True o False
Question 2 You may use the Normal distribution when you have the standard deviation of the sample and the sample size is higher than 30. True False Question 3 With of 98 and a sample standard deviation of 10, the sample size of 16, and the population mean (μ) of a 100, the experimental t value is 0.8, and the P – value is between 0.10 and 0.25. True False
A normal distribution is approximated as a Student t distribution when the population standard deviation is unknown. Select one: True on O False
The t test is used when the standard deviation of the population is known. True False
11 a) True or False: The t distribution has a greater standard deviation than the standard normal z distribution. Can you explain or prove why this is True? I have a hunch it has something to do with the sample sizes vs the population but I'm really not sure & I really like to be able to explain why things are true or false for questions like this. Thanks!
The standard deviation of the population is commonly used to estimate the standard deviation of the sample. True False
1. The T distribution can be use when comparing two population with population variance unknown. True False 2. You may use the Normal distribution when comparing two population with population variance known. True False
QUESTION 13 The t distribution should be used whenever a. the population is not normally distributed. b. the sample standard deviation is used to estimate the population standard deviation. c. the sample size is less than 30. d. the population standard deviation is known.
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