A laboratory claims that the mean sodium level, u , of a healthy adult is 141 mEq per liter of blood. To test this claim, a random sample of 90 adult patients is evaluated. The mean sodium level for the sample is 142 mEq per liter of blood. It is known that the population standard deviation of adult sodium levels is 11 mEq. 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 fill in the table below. Carry your intermediate computations to at least three decimal places, and round your responses as specified in the table. (If necessary, consult a list of formulas.) The null hypothesis: Ho: ? The alternative hypothesis: H1: ? The type of test statistic: ? The value of the test statistic: (Round to at least three decimal places.) ? The two critical values at the 0.1 level of significance: _? _? (Round to at least three decimal places.) Can we conclude that the population mean adult sodium level differs from that claimed by the laboratory?
A laboratory claims that the mean sodium level, u , of a healthy adult is 141 mEq per liter of blood. To test this claim, a random sample of 90 adult patients is evaluated. The mean sodium level for the sample is 142 mEq per liter of blood. It is known that the population standard deviation of adult sodium levels is 11 mEq. 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 fill in the table below. Carry your intermediate computations to at least three decimal places, and round your responses as specified in the table. (If necessary, consult a list of formulas.) The null hypothesis: Ho: ? The alternative hypothesis: H1: ? The type of test statistic: ? The value of the test statistic: (Round to at least three decimal places.) ? The two critical values at the 0.1 level of significance: _? _? (Round to at least three decimal places.) Can we conclude that the population mean adult sodium level differs from that claimed by the laboratory?
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 laboratory claims that the mean sodium level, u , of a healthy adult is 141 mEq per liter of blood. To test this claim, a random sample of 90 adult patients is evaluated. The mean sodium level for the sample is 142 mEq per liter of blood. It is known that the population standard deviation of adult sodium levels is 11 mEq. 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 fill in the table below.
Carry your intermediate computations to at least three decimal places, and round your responses as specified in the table. (If necessary, consult a list of formulas.)
|
|
|
|
| The alternative hypothesis: |
H1: ?
|
|
|
|
| The type of test statistic: | ? |
| The value of the test statistic: (Round to at least three decimal places.) |
?
|
|
|
| The two critical values at the
0.1
|
| level of significance: _? _? (Round to at least three decimal places.) |
|
|
|
|
| Can we conclude that the population mean adult sodium level differs from that claimed by the laboratory? |
or no ?
|
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