Solution :-
Given that ,
A normal distribution is approximated as a student t distribution when the population standard deviation is unknown.
Is true .
A normal distribution is approximated as a Student t distribution when the population standard deviation is...
Question 1 The T distribution is used when you have the standard deviation of the population (σ). True 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
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!
V ide Question 1 The T distribution is used when you have the standard deviation of the population (o). O True o False
Table VII provides a t-distribution when the population standard deviation (sigma) is unknown. What is the degrees of freedom (df) for a sample size n = 20? 2 10 19 0 o 20
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
This Quiz: 22 pts possit Use the standard normal distribution or the t-distribution to construct a 99% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results. In a random sample of 40 people, the mean body mass index (BMI) was 26.9 and the standard deviation was 6.03. O A. Use a normal distribution because the sample is random, the population is normal, and is known O B. Use a...
When using the t distribution to calculate a confidence interval (because the population standard deviation is not known), we assume that the population of interest is normal or approximately normal.TrueFalse
Use the standard normal distribution or the t-distribution to construct a 99% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results. In a recent season, the population standard deviation of the yards per carry for all running backs was 122. The yards per carry of 25 randomly selected running backs are shown below. Assume the yards per carry are normally distributed 22 2.9 3.9 4.6 5.5 5.5 62 75...
Use the standard normal distribution or the t-distribution to construct a 99% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results. In a recent season, the population standard deviation of the yards per carry for all running backs was 1.27. The yards per carry of 25 randomly selected running backs are shown below. Assume the yards per carry are normally distributed. 2.9 8.4 7.2 4.3 6.8 2.7 7.2 4.8...