The researcher wants to check the claim that the mean sodium level at a healthy person, μ is 140 mEg.
Sample size (n) is 9
Sample mean is 144 mEg.
Population standard deviation is 11 mEg.
Significance level is 0.01.
The null hypothesis is: Ho: μ = 140
The alternative hypothesis is: Ho: μ ≠ 140
The type test statistic used is Z as the population standard deviation value is known.
The value of the test statistic:
The two-tailed critical value at the 0.01 significance level from the z-table is 2.576.
The researcher rejects the null hypothesis as the test statistic (0.9428) is less than the critical value (2.576).
Therefore, there is not enough evidence to support the claim that the mean sodium level at a healthy person is 140 mEg.
No, we cannot conclude that the population mean adult sodium level differs from that claimed by the laboratory.
A laboratory claims that the mean sexlektauto Sodium level, N, of a healing adult is 140...
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Time Romeine 149:43 A laboratory claims that the mean sodium level, of a healthy adult is 140 mq per liter of blood. To test this claim, random sample of 9 ut patients is evaluated. The mean sodium level for the sample is 144 mq per liter of blood. It is known that the population standard deviation of adult sodium levels is 11 mEq. Assume that the population is normally distributed. Can we conclude, at the 0.01 level of significance, that...
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for the type of test statistic, is it z, t, chi square or F. please help with this entire question Tee Roaring 105.02 A laboratory claims that the mean sodium level, H. of a healthy adult is 140 mq per liter of blood. To test this claim, a random sample of 9 adult patients is evaluated. The mean sodium level for the sample is 144 mq per liter of blood. It is known that the population standard deviation of adult...