A laboratory claims that the mean sodium level, µ, of a healthy adult is 139 mEq per liter of blood. To test this claim, a random sample of 13 adult patients is evaluated. The mean sodium level for the sample is 130 mEq per liter of blood. It is known that the population standard deviation of adult sodium levels is 12 mEq. Assume that the population is normally distributed. Can we conclude, at the 0.1 level of significance, that the population mean adult sodium level differs from that claimed by the laboratory? Perform a two-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places, and round your responses as specified below. (If necessary, consult a list of formulas.) (a) State the null hypothesis H and the alternative hypothesis H. H, :0 H :0 (b) Determine the type of test statistic to use. D=0 OSO (c) Find the value of the test statistic. (Round to three more decimal places.) O

A laboratory claims that the mean sodium level, µ, of a healthy adult is 139 mEq per liter of blood. To test this claim, a random sample of 13 adult patients is evaluated. The mean sodium level for the sample is 130 mEq per liter of blood. It is known that the population standard deviation of adult sodium levels is 12 mEq. Assume that the population is normally distributed. Can we conclude, at the 0.1 level of significance, that the population mean adult sodium level differs from that claimed by the laboratory? Perform a two-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places, and round your responses as specified below. (If necessary, consult a list of formulas.) (a) State the null hypothesis H and the alternative hypothesis H. H, :0 H :0 (b) Determine the type of test statistic to use. D=0 OSO (c) Find the value of the test statistic. (Round to three more decimal places.) O

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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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Profit and Loss

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A laboratory claims that the mean sodium level, µ, of a healthy adult is 139 mEq per liter of blood. To test this claim, a random sample of 13 adult patients is
evaluated. The mean sodium level for the sample is 130 mEq per liter of blood. It is known that the population standard deviation of adult sodium levels is 12
mEq. Assume that the population is normally distributed. Can we conclude, at the 0.1 level of significance, that the population mean adult sodium level differs
from that claimed by the laboratory?
Perform a two-tailed test. Then complete the parts below.
Carry your intermediate computations to three or more decimal places, and round your responses as specified below. (If necessary, consult a list of formulas.)
(a) State the null hypothesis H, and the alternative hypothesis H.
H, :0
H, :0
(b) Determine the type of test statistic to use.
O=0
OSO
(c) Find the value of the test statistic. (Round to three or more decimal places.)
O#0
O<O
(d) Find the two critical values. (Round to three or more decimal places.)
and
(e) Can we conclude that the population mean adult sodium level differs from
that claimed by the laboratory?
OYes ONo

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