**9.17 Iron Deficiency?**Iron is essential to most life forms and to normal human physiology. It is an integral part of many proteins and enzymes that maintain good health. Recommendations for iron are provided in *Dietary Reference Intakes*, developed by the Institute of Medicine of the National Academy of Sciences. The recommended dietary allowance (RDA) of iron for adult females under the age of 51 years is 18 milligrams (mg) per day. A hypothesis test is to be performed to decide whether adult females under the age of 51 years are, on average, getting less than the RDA of 18 mg of iron. **Hypothesis Test**a. Determine the null hypothesis.b. Determine the alternative hypothesis.c. Classify the hypothesis test as two-tailed, left-tailed, or right-tailed.

The population mean is, μ=18 mg of iron Claim: Test whether the adult females under the age of 51…

Answered: 9.17 Iron Deficiency? Iron is essential…

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 social worker in South Phoenix delivered an intervention on financial literacy. The program is six weeks long (one hour per week). She collected pre and post- test surveys in order to determine if participants’ knowledge on financial literacy increased due their involvement in the program. Review the table below and answer the following questions. Table 1. Financial literacy intervention change from pre to post test M SD t p Financial Literacy Knowledge 5.04 .001 Pre test 7.25 1.78 Post test 8.42 1.20 1. Was a dependent or independent t-test used to analyze the data? How do you know?
MDM Farms grows normally distributed potatoes and is testing a new crop. After 4 months, 20 plants produce potatoes with the following weights (in kg): 0.7, 1.4, 1.4, 1.3, 0.3, 1.4, 0.6, 1.3, 1.3, 1.1, 0.9, 1.5, 1.1, 1.5, 0.6, 1.4, 1.1, 0.5, 0.6, 0.8 a. Find the mean and standard deviation of the sample. b. What percent of potatoes grown from this crop will be over 2 kg?
A blog noted that "there has been increasing anecdotal evidence that vitamin C may still be useful as an anticancer medicine if used in high concentrations and given directly into the vein (intravenously)." Use this information to answer the questions below. Question content area bottom Part 1 Explain what it means that there is "increasing anecdotal evidence" that Vitamin C may be a useful anticancer medicine. A. There is no evidence that shows Vitamin C may be a useful anticancer medicine. B. There is scientific evidence that Vitamin C is a non-useful anticancer medicine. C. There is an increase in rigorous or scientific analysis that shows Vitamin C may be a useful anticancer medicine. D. There is an increase in observations or personal experiences that shows Vitamin C may be a useful anticancer medicine. Part 2 How does anecdotal evidence contrast with scientific evidence? A. They are stories about individual cases.…
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Please use the accompanying Excel data set or accompanying Text file data set when completing the following exercise. An article in the Australian Journal of Agricultural Research, "Non-Starch Polysaccharides and Broiler Performance on Diets Containing Soyabean Meal as the Sole Protein Concentrate" (1993, Vol. 44, No. 8, pp. 1483-1499) determined the essential amino acid (Lysine) composition level of soybean meals are as shown below (g/kg): 22.2 24.7 20.9 26.0 27.0 24.8 26.5 23.8 25.6 23.9 Round your answers to 2 decimal places. (a) Construct a 90% two-sided confidence interval for a sa's (b) Calculate a 90% lower confidence bound for a So² (c) Calculate a 95% lower confidence bound for a.. So Statistical Tables and Charts
The average starting salary of students who graduated from colleges of Business in 2009 was $48,400.A sample of 100 graduates in 2010 showed an average starting salary of $50,000. Assume the standarddeviation of the population is known to be $8000. We want to determine whether or not there hasbeen a significant increase in the starting salaries.Step 1. Statement of the hypothesis Step 2. Standardized test statistic formula Step 3. State the level of significance Step 4. Decision Rule (Draw a bell to show rejection zone) Step 5. Calculation of the statistic Step 6. Conclusion
A survey collects demographic, socioeconomic, dietary, and health-related information on an annual basis. Here is a sample of 20 observations on HDL cholesterol level (mg/dl) obtained from the survey (HDL is "good" cholesterol; the higher its value, the lower the risk for heart disease). 36 46 38 48 51 53 66 50 50 85 37 45 32 38 44 62 94 34 29 47 (a) Calculate a point estimate (in mg/dl) of the population mean HDL cholesterol level. 49.5 mg/dl (b) Making no assumptions about the shape of the population distribution, calculate a point estimate (in mg/dl) of the value that separates the largest 50% of HDL levels from the smallest 50%. 44 X mg/dl (c) Calculate a point estimate (in mg/dl) of the population standard deviation. (Round your answer to three decimal places.) 18.46 X mg/dl (d) An HDL level of at least 60 is considered desirable as it corresponds to a significantly lower risk of heart disease. Making no assumptions about the shape of the population distribution, estimate the…
It costs more to produce defective items—since they must be scrapped or reworked—than it does to produce non-defective items. This simple fact suggests that manufacturers should ensure the quality of their products by perfecting their production processes instead of depending on inspection of finished products (Deming, 1986). In order to better understand a particular metal stamping process, a manufacturer wishes to estimate the mean length of items produced by the process during the past 24 hours. a. How many parts should be sampled in order to estimate the population mean to within .2 millimeter (mm) with 95% confidence? Previous studies of this machine have indicated that the standard deviation of lengths produced by the stamping operation is about 2 mm. b. Time permits the use of a sample size no larger than 225. If a 95% confidence interval for m is constructed with n = 225, will it be wider or narrower than would have been obtained using the sample size determined in part a?…
In Exercises 5–12, identify whether the given value is a statistic or a parameter.CHIS A recent California Health Interview Survey (CHIS) included 2799 adolescent residents of California.

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