1:20 PM Wed Jul 29 2 pts Question 13 Assume the sample is a random sample...
Assume the sample is a random sample from a distribution that is reasonably normally distributed and we are doing inference for a sample mean. Find the area in a t-distribution below -1.0 if the sample has size n=20. Round your answer to three decimal places. area = ???
a.) Assume the sample is a random sample from a distribution that is reasonably normally distributed and we are doing inference for a sample mean. Find endpoints of a t-distribution with 5% beyond them in each tail if the sample has size n=8. Round your answer to three decimal places. endpoints = +- b.) Assume the sample is a random sample from a distribution that is reasonably normally distributed and we are doing inference for a sample mean. Find endpoints...
Chapter 6, Section 2-D, Exercise 071 Assume the sample is a random sample from a distribution that is reasonably normally distributed and we are doing inference for a sample mean. Find the area in a t- distribution above 2.3 if the sample has size 6 Round your answer to three decimal places. area the absolute tolerance is +/-0.001
given answer incorrect please answer correctly Assume the sample is a random sample from a distribution that is reasonably normally distributed and we are doing inference for a sample mean. Find endpoints of a t-distribution with 1% beyond them in each tail if the sample has size n = 20. Round your answer to three decimal places. endpoints = + i 2.861
0/0.14 pts Question 17 Use a t-distribution to answer this question. Assume the samples are random samples from distributions that are reasonably normally distributed, and that a t-statistic will be used for inference about the difference in sample means. Find the endpoints of the appropriate t-distribution with 2.5% beyond them in each 27. tail if the samples have sizes n1 = 17 and n2 endpoints +
To test Ho : ?= 20 versus H1 : ?< 20, a simple random sample of size n = 17 is obtained from a population that is known to be normally distributed Answer parts (a)-(d) E Click here to view the t-Distribution Area in Right Tail (a) If x 18.3 and s 3.8, compute the test statistic. t-(Round to two decimal places as needed.)
[40] QUESTION 4 Assume that X is normally distributed and that a random sample of size n = 20 from this distribution yielded the following statistics: X = 31 and S=7. (a) Is there strong evidence to conclude that Ho : q2 = 30 against H:02 #30 at the a = 0.05 level of significance? (b) Construct a 90% confidence interval for the population standard deviation. [15] [100]
Question 43 2 pts 16. To test the claim that o < 2.2, a random sample of size n=25 is obtained from a population that is known to be normally distributed. Use s = 3.91 and a = 005 level of significance
Question 43 2 pts 16. To test the claim that o < 2.2, a random sample of size n=25 is obtained from a population that is known to be normally distributed. Use s = 3.91 and a = 0.05 level of significance.
4 pts Question 20 Consider taking random samples of size 50 from Population A with mean 15 and standard deviation 3 and random samples of size 75 from Population B with mean 10 and standard deviation 5. Use the provided formula sheet to calculate the standard error of the distribution of differences in sample means, T-58 Standard error = (Select) How many degrees of freedom should be used when conducting inference for ид - ив with samples of this size?...