KIron is an integral part of many proteins and enzymes that maintain good health. Recommendations for iron weredeveloped by an institute of medicine for a certain region. The recommended dietary allowance (RDA) of iron for adultfemales under the age of 51 years is 19 milligrams (mg) per day. A hypothesis test is to be performed to decidewhether adult females under the age of 51 years are, on average, getting more than the RDA of 19 mg of iron per day.Complete parts (a) through (c).a. Determine the null hypothesis.Houmg(Type an integer or a decimal. Do not round.)b. Determine the alternative hypothesis.Ha: Hmg(Type an integer or a decimal. Do not round.)c. Classify the hypothesis test as two tailed, left tailed, or right tailed.The hypothesis test isspecified value Ho.because the test is deciding whether the population mean isTime Remaining: 01:48:24theNext

From the provided information, The RDA of iron for adult females under the age of 51 years is 19 mg…

Answered: Iron is an integral part of many…

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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Exposure to microbial products, especially endotoxin, may have an impact on vulnerability to allergic diseases. The following are data on concentration (EU/mg) in settled dust for one sample of of farm homes U: 9.0 4.0 13.0 32.0 1.0 5.0 81.0 20.0 37.0 15.0 25.0 F: 2.0 16.0 12.0 7.0 7.0 7.0 4.0 19.0 3.0 7.8 22.0 8.7 1.0 1.0 0.7 (a) Determine the sample mean for each sample. (Enter your answers to two decimal places.) For urban homes, -22 ✔EU/mg EU/mg For farm homes, x-750 How do they compare? to the dotoxin con otration
In an attempt to reduce the growth of its population, China instituted a policy limiting a familyto one child. Rural Chinese suggested revising the policy to limit families to one son. Assumingthe suggested policy is adopted and that any birth is as likely to produce a boy as a girl, and thesuccessive births are independent, explain the following: (a) What would be the average family size? (b)What would be the ratio of newborn boys to newborn girls?
It is a long question and both pictures are part of the same question though.
Joan's Nursery specializes in custom-designed landscaping for residential areas. The estimated labor cost associated with a particular landscaping proposal is based on the number of plantings of trees, shrubs, and so on to be used for the project. For cost estimating purposes, managers use two hours of labor time for the planting of a medium-sized tree. Actual times from a sample of 10 plantings during the past month follow (times in 2 hours). 3.2 1.5 1.7 2.5 3.0 2.5 2.3 1.8 3.7 2.7 With a 0.05 level of significance, test to see whether the mean tree-planting time differs from two b. Compute the sample mean. (to 2 decimals) c. Compute the sample standard deviation. (to 4 decimals) d. Find the test statistic and p -value. (to 3 decimals) p-value: here is the choices lower than 0.01 between 0.01 and 0.025 between 0.05 and 0.0250 between 0.05 and 0.10 between 0.10 and 0.20 greater than 0.20 e. What is your conclusion? We do or do not reject the null…
Estimated statistics for the United States and Germany in 2018 United States Crude Mortality rate= 900 per 100,000 Crude birth rates = 10.4 per 1,000 Life expectancy = 80.0 years Germany Crude Mortality rate= 700 per 100,000 Crude birth rates = 15.4 per 1,000 Life expectancy = 65.0 years A. Can the lower crude mortality rate in Germany be explained by the fact that the United States has a larger population? B. What factors could explain differences in birth rates and life expectancy?
Joan's Nursery specializes in custom-designed landscaping for residential areas. The estimated labor cost associated with a particular landscaping proposal is based on the number of plantings of trees, shrubs, and so on to be used for the project. For cost-estimating purposes, managers use two hours of labor time for the planting of a medium-sized tree. Actual times from a sample of 10 plantings during the past month follow (times in hours). 1.8 1.4 2.7 2.1 2.3 2.3 2.6 3.0 1.5 2.3 (c) Compute the sample standard deviation. (Round your answer to three decimal places.) (d) What is the test statistic? (Round your answer to three decimal places.) What is the p-value? (Round your answer to four decimal places.) p-value = (e) What is your conclusion? Do not reject H0. We can conclude that the mean tree-planting time differs from two hours. There is a reason to change from the two hours for cost estimating purposes. Reject H0. We can conclude that the mean…
What is the difference between an observational study and an experiment? Choose the correct answer below. OA. In an experiment, a treatment is applied to part of a population and responses are observed. In an observational study, a researcher measures characteristics of interest of a part of a population but does not change existing conditions. OB. In an experiment, a treatment is applied to an entire population and responses are observed. In an observational study, a researcher measures. characteristics of interest of an entire population but does not change existing conditions. OC. In an experiment, a researcher measures characteristics of interest of a part of a population but does not change existing conditions. In an observational study, a treatment is applied to part of a population and responses are observed. OD. In an experiment, a researcher measures characteristics of interest of an entire population but does not change existing conditions. In an observational study, a…
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 48 51 55 66 50 52 46 85 35 45 34 40 44 40 62 94 36 31 47 (a) Calculate a point estimate (in mg/dl) of the population mean HDL cholesterol level. 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%. mg/dl (c) Calculate a point estimate (in mg/dl) of the population standard deviation. (Round your answer to three decimal places.) mg/dl
7.38 Food intake and weight gain. If we increase our food intake, we generally gain weight. Nutrition scientists can calculate the amount of weight gain that would be associated with a given increase in calories. In one study, 16 nonobese adults, aged 25 to 36 years, were fed 1000 calories per day in excess of the calories needed to maintain a stable body weight. The subjects maintained this diet for eight weeks, so they consumed a total of 56,000 extra calories.18 According to theory, 3500 extra calories will translate into a weight gain of 1 pound. Therefore, we expect each of these subjects to gain 56,000/3500 = 16 pounds (lb). Here are the weights before and after the eight-week period, expressed in kilograms (kg): WTGAIN Subject 1 2 3 Weight before 55.7 54.9 59.6 Weight after 4 5 6 7 8 62.3 74.2 75.6 70.7 53.3 61.7 58.8 66.0 66.2 79.0 82.3 74.3 59.3 Subject 9 10 11 12 13 14 15 Weight before 73.3 63.4 68.1 73.7 91.7 55.9 61.7 Weight after 79.1 66.0 73.4 76.9 93.1 63.0 68.2 W wr ore…
A paper investigated the driving behavior of teenagers by observing their vehicles as they left a high school parking lot and then again at a site approximately 1 2 mile from the school. Assume that it is reasonable to regard the teen drivers in this study as representative of the population of teen drivers. Amount by Which Speed Limit Was Exceeded MaleDriver FemaleDriver 1.3 -0.1 1.3 0.4 0.9 1.1 2.1 0.7 0.7 1.1 1.3 1.2 3 0.1 1.3 0.9 0.6 0.5 2.1 0.5 (a) Use a .01 level of significance for any hypothesis tests. Data consistent with summary quantities appearing in the paper are given in the table. The measurements represent the difference between the observed vehicle speed and the posted speed limit (in miles per hour) for a sample of male teenage drivers and a sample of female teenage drivers. (Use μmales − μfemales.Round your test statistic to two decimal places. Round your degrees of freedom down to the nearest whole number. Round your p-value to…
In a mass screening of 1,000 65-year-old men in 2002, 100 were found to have diabetes. During the following 10-year period another 200 contracted diabetes. What was the prevalence of diabetes in 2002? What was the prevalence in 2012? i a haveing a hard time understanding how to calculate there measures
"Radon: The Problem No One Wants to Face" is the title of an article appearing in Consumer Reports. Radon is a gas emitted from the ground that can collect in houses and buildings. At certain levels it can cause lung cancer. Radon concentrations are measured in picocuries per liter (pCi/L). A radon level of 4 pCi/L is considered "acceptable." Radon levels in a house vary from week to week. In one house, a sample of 8 weeks had the following readings for radon level (in pCi/L). 1.9 2.5 5.7 4.6 1.9 8.1 3.9 7 (a) Find the mean, median, and mode. mean median mode (b) Find the sample standard deviation, coefficient of variation, and range. (Round your standard deviation to four decimal places and your coefficient of variation to two decimal places.) s CV % range (c) Based on the data, would you recommend radon mitigation in this house? Explain. Yes, since the average and median values are both over "acceptable" ranges. Yes, since the median value is over…

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