4. The removal rate y measures the fraction of individuals in the infectious class that stops being infectious, and thus moves into the removed class, at every time step. True/false?
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- excerpt from “Shoes: Feet First!”from A History of Travel in 50 Vehiclesby Paula Grey & Phillip Hoose Despite the relatively recent age of the early shoes found to date, scientists believe that humans were wearing shoes as much as 40,000 years ago. Shoes made of reeds, papyrus, or even leather decompose easily, leaving few or no traces. But people who don’t wear shoes have wider feet and bigger gaps between their big toe and the other four. In studying bones of the smaller toes of fossilized skeletons, scientists observed that the thickness of these bones decreased somewhere between 40,000 and 26,000 years ago. They believe the change was the result of wearing shoes. 1 Select the correct answer. Read this sentence again. In studying bones of the smaller toes of fossilized skeletons, scientists observed that the thickness of these bones decreased somewhere between 40,000 and 26,000 years ago. How does the sentence develop the author’s claim in the passage?…A sample of 3 measurements are taken and recorded: a =8, y = 10 and z = 7 The sample mean is: x = = 8.33 Fill in the table below. aj (a; - x)2 Ex: 5.34 Ex: 5.34 Ex: 5.34 82 = (z-z)*+(y-a)* +(z-z) Ex: 5.34 (z-2)*+(y-z)* +(z-) = Ex: 5.34The age-specific death rate for the over-65 age group is Age-Group Population Number of Deaths 65 6,000 155 a. 155 b. 25.8 per 1,000 O c. 1.55 per 10,000 d. 25.8 per 10,000
- ata Set 12 “Passive and Active Smoke” in Appendix B includes cotinine levels measured in a group of nonsmokers exposed to tobacco smoke (n = 40, Mean = 60.58 ng>mL, s = 138.08 ng>mL) and a group of nonsmokers not exposed to tobacco smoke (n = 40, Mean = 16.35 ng>mL, s = 62.53 ng>mL). Cotinine is a metabolite of nicotine, meaning that when nicotine is absorbed by the body, cotinine is produced. Use a 0.05 significance level to test the claim that nonsmokers exposed to tobacco smoke have a higher mean cotinine level than nonsmokers not exposed to tobacco smoke. 1. Find the degrees of freedom using the conversative estimate formula. What is it? 2. Find the critical value. What is it? 3. Sketch a normal distribution curve and highlight the region of significance.One-Way ANOVA A researcher wants to know if the time of day that a test is taken affects critical thinking ability. Factor (IV) = Time of Day DV = correct answers on a critical thinking abilities test. MORNING AFTERNOON NIGHT 4 3 8 3 1 4 5 3 6 4 1 6 ENTER VARIABLE: Time_of_Day Value Labels for each level 1 = Morning, 2 = afternoon, 3 = Night Move DV in to “Dependent List” Move IV in to “Factor” Select the Tukey post hoc analysis Click “options” Descriptive Stats Homogeneity of Variance test (should be greater than alpha level) THREE or FOUR THINGS to REPORT You will be reporting three or four things, depending on whether you find a significant results for your one-way ANOVA. Test type and use You want to tell your reader what type of analysis you conducted. This will help your reader make sense of your results. You also want to tell your reader why this particular analysis was used. What did your analysis test for? EXAMPLE: “A….A new, miracle diabetes drug that diminishes major symptoms of diabetes has been approved by the FDA. Health care professionals and researchers believe that the new drug will prolong lifespan of diabetes patients. If the population is in steady state and the incidence is constant, what will the effect of this new drug be on the prevalence of diabetes in the population? Explain.
- A researcher designs an experiment using two drugs, she prepares 15 independent flasks of yeast growth medium and yeast cells. She adds tunicamycin (T) or caffeine (C) to 5 flasks each. Remaining 5 flasks get no drugs (ND). Doubling time of the yeast cells are measured in each flask, data is in the table. Test if mean doubling time is different than others in at least one growth condition (ND, T or C), using F-test and report an approximate p-value for the level of significance. What is the hypotheses and the assumptions of this test?22End ( X Z Tod Yates's x Assignment x ters.instructure.com/courses/20975/assignments/719156?module_item_id=1667085 18 = Short Essay xⒸ Week 7 Blor x Important Information Unit 4: End of Unit Activity - Independent Events Grading For This Assignment Copy of Bico x hp Activity-What to Turn In ASSIGNMENT 1. If you roll a single die and get 4 fives in a row, what is the probability that you'll get a five on the next roll? 2. What is the probability that you'll get 5 fives in a row when rolling a single die? 3. A roulette wheel has 38 numbers. If the "lucky" number 7 comes up twice in a row, what is the probability it will come up on the very next roll? 4. What is the probability of getting three 7's in a row on a roulette wheel? 5. If I type randint(1,10) on my calculator, I get a random integer between 1 and 10 (inclusive). If I do this 6 times, what is the probability that all 6 outcomes will be a 1? 6. If I roll a pair of dice, what is the probability of getting a pair of sixes? 7. If I…
- Which of the following is a NOT Goal based upon research that we can use to build a testable experiment? * Old pennies and new pennies are made of different metals O The density of old pennies vs the density of new pennies The mass of new pennies vs. the mass of old pennies The volume of old pennies vs. the volume of new pennies3. Show your complete solution.