Q4. The following shows the expressions for computing two C.I. from aNormally distributed population.I. X± 1.96and II. X± 2.57Identify the Incorrect statement:A. I. and II. are confidence intervals for the sample mean, XB. I. is a 95% and II. is a 99% C.I.C. The mean of the Population is unknown.D. The variance of the Population is designated o?.А. АОВ. ВС. СO D. D

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Answered: Q4. The following shows the expressions…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A. What is the 95% Cl of a population mean when the mean of a sample is 10, the standard deviation is 2, and the sample size is 100? B. What is the 95% Cl of a population mean when the mean of a sample is 10, the standard deviation is 2, and the sample size 25? C. discuss the difference in these Cis. What is the relationship between the Cl range and sample size?
What is the difference between Micro and M? a. Micro (u) is the variance and M is the mean b. Micro (u) i sthe median and M is the mean c.Micro (u) is the mean of the sample and M is the mean of the population d. Micro (u) is the mean of the population and M is the mean of the sample
As shown below are two normal curves. Let and o be the mean and the standard deviation of curve A (the more peaked curve) and Hg and og be the mean and the standard deviation of curve B (the broader curve). What do you observe about these two normal curves? P(x) 0.4 A 0.3 0.2 0.1 0.0 2 4 6 10 2 14 Select one: a. All statements are true. b. The mean of both curves is 8. Symbolically, HA = HB = 8. c. Both curves are symmetric with respect to their means. O d. Curve A has a lower standard deviation than Curve B. Symbolically, oA 8.
J2.
A statistician wishes to determine the difference between two population means. A sample of 18 items from Population #1 yields a mean of 205 with a standard deviation of 12. The sample of 15 items from Population #2 yields a mean of 190 with a standard deviation of 10. Assume that the values are normally distributed in each population. How many degrees of freedom are there for this test? a. 18 b. 14 c.15 d. 17
I need help with #15
One of the following is the minimum variance unbiased estimator for u. The sample variance. The sample mean. The sample mean square error. The meadian.
A population has a mean μ = 82 and a standard deviation o = 16. Find the mean and standard deviation of a sampling distribution of sample means with sample size n = 64. H = (Simplify your answer.) ...
Do question 3
If other factors are held constant, which of the following sets of data is most likely to produce a significant value for the repeated-measures t statistic? O n= 30 and SS 100 for the difference scores On=15 and SS = 10 for the difference scores On = 15 and SS= 100 for the difference scores %3D O n= 30 and SS = 10 for the difference scores %3D
The role of the covariate is to: a.Compare variables of interest without a nuisance variable masking true differences. b.Reduce within-wroup error variance and help eliminate confounding variable bias. c.To determine the predictive power of the independent variable using odds d.A & B
r work if possible

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