Among 157 patients ,the mean systolic blood pressure was 146 mm Hg with a standard deviation of 27. We wish to know if on the basis of these data, we may conclude that the mean systolic blood pressure for a population is greater than 140. Use a=0.01 The calulated value is Cacuized = 0.017 Caculared = 2.78 Ocured - 0.017 Calculated = 2.78 %3D

Among 157 patients ,the mean systolic blood pressure was 146 mm Hg with a standard deviation of 27. We wish to know if on the basis of these data, we may conclude that the mean systolic blood pressure for a population is greater than 140. Use a=0.01 The calulated value is Cacuized = 0.017 Caculared = 2.78 Ocured - 0.017 Calculated = 2.78 %3D

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Description: 11 Among 157 patients ,the meansystolic blood pressure was 146mm Hg witha standarddeviation of 27. We wish toknow if on the basis of thesedata, we may conclude that themean systolic blood pressurefor a population is greater than140. Use a=0.01The cal

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter4: Polynomial And Rational Functions

Section4.6: Rational Functions

Problem 11SC: Find the mean hourly cost when the cell phone described above is used for 240 minutes.

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Find the mean hourly cost when the cell phone described above is used for 240 minutes.
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Sulfur compounds cause "off‑odors" in wine, so winemakers want to know the odor threshold, the lowest concentration of a compound that the human nose can detect. The odor threshold for dimethyl sulfide (DMS) in trained wine tasters is about 25 micrograms per liter of wine (?g/L ). The untrained noses of consumers may be less sensitive, however. The DMS odor thresholds for 10 untrained students are given. 30 30 42 35 22 33 31 29 19 23 (a) Assume that the standard deviation of the odor threshold for untrained noses is known to be ?=7?g/Lσ To access the complete data set, click the link for your preferred software format: Do the three simple conditions hold in this case? Make a stemplot and use it to check the shape of the distribution. (b) STATE: What is the average (mean) DMS odor threshold, ?μ , for all untrained people? PLAN: Using the four‑step process, give a 95%95% confidence interval for the mean DMS odor threshold among all students. SOLVE: We have assumed that we…
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If someone's diastolic pressure is above average, would you expect that person's systolic pressure to be above or below average?
Unfortunately, arsenic occurs naturally in some ground water. † A mean arsenic level of μ = 8.0 parts per billion (ppb) is considered safe for agricultural use. A well in Texas is used to water cotton crops. This well is tested on a regular basis for arsenic. A random sample of 31 tests gave a sample mean of x = 6.9 ppb arsenic, with s = 2.4 ppb. Does this information indicate that the mean level of arsenic in this well is less than 8 ppb? Use α = 0.01. USE SALT (a) What is the level of significance? State the null and alternate hypotheses. Ho: μ = 8 ppb; H₁₂: μ > 8 ppb Ho: μ = 8 ppb; H₁: μ 8 ppb; H₁: μ = 8 ppb Ho: μ 0.100 0.050 P-value < 0.100 0.010 < P-value < 0.050 0.005 P-value < 0.010 P-value < 0.005 Sketch the sampling distribution and show the area corresponding to the P-value. -2 -2 0 0 2 2 4 4 -4 -2 -2 0 0 2 2 4 4 (d) Based on your answers in parts (a) to (c), will you reject or fail to reject the null hypothesis? Are the data statistically significant at level a? At the α =…
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In a herd of longhern cattle the mean horn length is 52cm and h2 is 0.2. Predict the mean horn length if cattle with horn of 61cm long are interbred
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