In a population, the mean is known to be 1.27 and the standard deviation is known to be 0.351.Suppose a random sample of size 169 is taken from this population. What can be said about thedistribution of the sample mean?Select one:It is approximately normal with mean 1.27, but the standard deviation is not known.It is approximately normal, with mean 1.27 and standard deviation 0.351.There is not enough information to say anything about this distribution.It is approximately normal, with mean 1.27 and standard deviation 0.002It is approximately normal, but with unknown mean and unknown standard deviation.It is approximately normal, with mean 1.27 and standard deviation 0.097.It is approximately normal, with mean 1.27 and standard deviation 0.027.00

The population mean is 1.27; μ=1.27 The population standard deviation is 0.351;σ=0.351 The sample…

Answered: In a population, the mean is known to…

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 notable indicator of a baby's health is the weight gained in the first year of the baby's life. Assume that the population of all such weight gains for baby boys is approximately normally distributed. A study claimed that the mean of this population is 4.93 kg. As a practicing pediatrician, you want to test this claim. So, you select a random sample of 16 baby boys, and you record the weight each gained in their first year. Follow the steps below to construct a 99% confidence interval for the population mean of all the weight gains for baby boys in their first year. Then state whether the confidence interval you construct contradicts the study's claim. (If necessary, consult a list of formulas.) (a) Click on "Take Sample" to see the results for your random sample. Sample standard Number of baby boys Sample mean deviation Take Sample 16 5.496 1.873 Enter the values of the sample size, the point estimate of the mean, the sample standard deviation, and the critical value you need for…
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