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 = ???
Solution :
Given that,
sample size = n = 20
Degrees of freedom = df = n - 1 = 19
P(t < -1) = 0.1649
Probability = 0.1649
Assume the sample is a random sample from a distribution that is reasonably normally distributed and...
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...
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
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
1:20 PM Wed Jul 29 2 pts Question 13 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. Area = 0.159 0.165 0.071 0.075 Question 14 2 pts 2 pts Question 14 Assume the sample is a random sample from a distribution that is reasonably normally distributed and we are doing...
View Policies Current Attempt in Progress 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. State the degrees of freedom used. Find the proportion in at-distribution less than - 1.4 if the samples have sizes n 1 = 30 and n 2 - 40. Enter the exact answer for the degrees of freedom and...
A random sample of size 15 was taken from a normally distributed population with a population mean 26 and a population standard deviation 4. Determine each of the following about the sampling distribution of the sample mean. Round your answer to at least 3 decimal places where appropriate. a) μx_= b) σx_= c) Can we conclude that the sampling distribution of the sample mean is normal?
A random sample of size 12 was taken from a normally distributed population with a population mean 28 and a population standard deviation 4. Determine each of the following about the sampling distribution of the sample mean. Round your answer to at least 3 decimal places where appropriate. a) un Number b) 0 = Number c) Can we conclude that the sampling distribution of the sample mean is normal? Click for List
A random sample is drawn from a normally distributed population with mean μ = 24 and standard deviation σ = 1.6. a. Are the sampling distribution of the sample mean with n = 32 and n = 63 normally distributed? Yes, both the sample means will have a normal distribution. No, both the sample means will not have a normal distribution. No, only the sample mean with n = 32 will have a normal distribution. No, only the sample mean...
A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 109, and the sample standard deviation, s, is found to be 10 (a) Construct a 98% confidence interval about if the sample size, n, is 29. (b) Construct a 98% confidence interval about if the sample size, n, is 13. (c) Construct an 80% confidence interval about if the sample size, n, is 29. (d) Could...
A random sample of size n = 60 were selected from a normally distributed population with with the mean of 15 and standard deviation of 6. What is the standard error (SE) of the sampling distribution of the sample mean? Write your answer with 4 decimal places.