The recommended dietary allowance (RDA) of iron for adult females is 18 milligrams (mg) per day. The given iron intakes (mg) were obtained for 45 random adult females. At the 5% significance level, do the data suggest that adult females are, on average, getting less than the RDA of 18 mg of iron? Assume that the population standard deviation is 4.1 mg. Preliminary data analyses indicate that applying the z-test is reasonable. (Note: x = 14.64 mg.) Click here to view the iron intake data. State the hypotheses for the one-mean z-test. mg Ha: H (Type integers or decimals. Do not round.) mg Compute the value of the test statistic. z= (Round to two decimal places as needed.) Determine the P-value. (Round to three decimal places as needed.) V the null hypothesis. At the 5% significance level, the data V sufficient evidence to conclude that adult females are the RDA of iron, on average.

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The recommended dietary allowance (RDA) of iron for adult females is 18 milligrams (mg) per day. The given iron intakes (mg) were obtained for 45
random adult females. At the 5% significance level, do the data suggest that adult females are, on average, getting less than the RDA of 18 mg of iron?
Assume that the population standard deviation is 4.1 mg. Preliminary data analyses indicate that applying the z-test is reasonable. (Note: x= 14.64 mg.)
Click here to view the iron intake data.
State the hypotheses for the one-mean z-test.
Ho: H V
Hai H
(Type integers or decimals. Do not round.)
mg
mg
Compute the value of the test statistic.
(Round to two decimal places as needed.)
Determine the P-value.
P =
(Round to three decimal places as needed.)
the null hypothesis. At the 5% significance level, the data
sufficient evidence to conclude that adult females are
the RDA of iron, on average.
Transcribed Image Text:The recommended dietary allowance (RDA) of iron for adult females is 18 milligrams (mg) per day. The given iron intakes (mg) were obtained for 45 random adult females. At the 5% significance level, do the data suggest that adult females are, on average, getting less than the RDA of 18 mg of iron? Assume that the population standard deviation is 4.1 mg. Preliminary data analyses indicate that applying the z-test is reasonable. (Note: x= 14.64 mg.) Click here to view the iron intake data. State the hypotheses for the one-mean z-test. Ho: H V Hai H (Type integers or decimals. Do not round.) mg mg Compute the value of the test statistic. (Round to two decimal places as needed.) Determine the P-value. P = (Round to three decimal places as needed.) the null hypothesis. At the 5% significance level, the data sufficient evidence to conclude that adult females are the RDA of iron, on average.
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