Let x represent the hemoglobin count (HC) in grams per 100 milliliters of whole blood. The distribution for HC is approximately normal with µ = 14 for healthy adult women. Suppose that a female patient has taken 12 laboratory blood samples in the last year. The HC data sent to her doctor is listed below. We would like to know if the data indicates this patient has significantly high HC compared to the population. 15, 21, 15, 15, 20, 17, 16, 21, 22, 22, 21, 21 Give the test statistic for this hypothesis test. a) t = 5.68 b) z = -2.95 c) t = 2.95 d) z = 19.67 e) t = -19.67 f) t = -5.68 g) z = 5.68 Question 4 Suppose a significance test results in p-value = 0.016. If ? = 0.05 what is the decision of this test? a) Reject the null hypothesis. b) Reject the alternative hypothesis. c) Do not reject the null hypothesis. d) Accept the null hypothesis. e) None of the above
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Let x represent the hemoglobin count (HC) in grams per 100 milliliters of whole blood. The distribution for HC is approximately normal with μ = 14 for healthy adult women. Suppose that a female patient has taken 12 laboratory blood samples in the last year. The HC data sent to her doctor is listed below. We would like to know if the data indicates this patient has significantly high HC compared to the population. 22, 21, 17, 17, 22, 17, 16, 14, 20, 17, 22, 17 State the null and alternate hypothesis. a) H₀: μ = 14, Hₐ: μ > 14 b) H₀: μ = 18.50, Hₐ: μ > 18.50 c) H₀: μ = 14, Hₐ: μ < 14 d) H₀: μ = 18.50, Hₐ: μ < 18.50 e) H₀: μ = 14, Hₐ: μ ≠ 14
Adi S.
Let the random variable x represent the hemoglobin count (HC) in grams per 100 milliliters of whole blood. Then x has a distribution that is approximately normal with population mean of 14 for healthy adult women. Suppose that a female patient has taken 12 laboratory blood tests during the past year. The HC data sent to the patient's doctor were 19 23 15 21 18 16 14 20 19 16 18 21 Does this information indicate that the population average HC for this patient is higher than 14? Using this information, the p-value of the appropriate test statistics is 0 < p < 0.01 0.01 < p < 0.05 The p-value cannot be determined. 0.05 < p < 1.00
David N.
Let $x$ be a random variable that represents red blood cell (RBC) count in millions of cells per cubic millimeter of whole blood. Then $x$ has a distribution that is approximately normal. For the population of healthy female adults, the mean of the $x$ distribution is about 4.8 (based on information from Diagnostic Tests with Nursing Implications, Springhouse Corporation). Suppose that a female patient has taken six laboratory blood tests over the past several months and that the RBC count data sent to the patient's doctor are $$4.9 \quad 4.2 \quad 4.5 \quad 4.1 \quad 4.4 \quad 4.3$$ i. Use a calculator with sample mean and sample standard deviation keys to verify that $\bar{x}=4.40$ and $s \approx 0.28$ ii. Do the given data indicate that the population mean RBC count for this patient is lower than $4.8 ?$ Use $\alpha=0.05.$
Hypothesis Testing
Testing the Mean $\mu$
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