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- Total Food Delivered (kg) 8. Figure 1- Modeling based on penguin data shows that the percentage of sea ice has an effect on the efficiency of Adélie penguin foraging. This graph shows the modeled effect of sea ice concentration on total mass of food delivered, per parent. Maximum efficiency is reached at about 12% but doesn't change for higher ice concentrations. Dotted lines indicate range of probable values. Graph modified from Ballard and others (2010). 10 Ice Concentration (%) 15. Look at the dotted lines on figure 1. Which statement is BEST supported by these dotted lines? It is likely that the least amount of food delivered by a single parent is about 5.0 kg It is likely that the least amount of food delivered by a single parent is about 4.5 kg. B.37Exhibit 10-30 A quantitative analysis teacher wants to see if there is any difference in the abilities of students enrolled in statistics in the summer and in the fall. Examination scores from a random sample of students enrolled this fall and from a random sample of students enrolled in the summer were selected. You are given the following information. x 0 n Fall 74 17.06 35 Summer 84.77 19.01 28 Refer to Exhibit 10-30. What conclusion can be reached about the difference in the average final examination scores between the two classes? (Use a .05 level of significance.) There is a statistically significant difference in the average final examination scores between the two classes. There is no statistically significant difference in the average final examination scores between the two classes. It is impossible to make a decision on the basis of the information given. There is a difference, but it is not significant.
- Does it make sense? For exercise 5-8, determine whether the statement makes sense (or is it clearly true) or does not make sense (or is clearly false). Explain clearly. Not all of these statements have definitive answers, so explanation more important that your chosen answer. See attached image.??■%19 [11. 11. ☎+N A study in which children are randomly assigned to receive either a newly formulated vaccine or the currently available vaccine, and are followed to monitor for side effects and effectiveness of each vaccine, is an example of which type of study? Observational Experimental Case-control Cohort Which of these formulas best represents the age-specific death rate? Number of people in a population who died to a specific cause/ people who died Number of people in a population who died/ total population at midyear Number of people in a specific age group who died/ total population of this age group Number of people in a population who died to a specific cause / total number of cases O A:-)
- Statistics (UPVOTE WILL BE GIVEN. NO LONG EXPLANATION. CHOOSE THE CORRECT ANSWER.)What percentage of daily low temperature is between 45-49 degrees? Daily Low Temperature (°F) 35-39 Frequency Daily Low Temperature (°F) 55-59 Frequency 1 40-44 3 60-64 45-49 50-54 65-69 11 What percentage of daily low temperature is between 45-49 degrees? OA. 142% O B. 10.2% OC. 54.2% O D. 23.7%P Do Homework - HW 9.2 - Google Chrome A mathxl.com/Student/PlayerHomework.aspx?homeworkld%=611562314&questionld-18&flushed=false&cld=6725222¢erwin=yes STA 2023 leidy correa pabon &| 12/03/21 11:42 AM Question 1, 9.2.12-T E Homework: HW 9,2 HW Score: 9.38%, 0.75 of 8 points O Points: 0.75 of 1 Part 5 of 6 Save Listed in the data table are IQ scores for a random sample of subjects with medium lead levels in their blood. Also listed are statistics from a study done of IQ scores for a random sample of subjects with high lead levels. Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Complete parts (a) d(b) below. E Click the icon to view the data table of IQ scores. a. Use a 0.05 significance level to test the claim that the mean IQ scores for subjects with medium lead levels is higher than the mean for subjects with high lead levels. What are the null and…
- Question Help ▼ A hospital readmission is an episode when a patient who has been discharged from a hospital is readmitted again within a certain time period. Nationally the readmission rate for patients with pneumonia is 11%. A hospital was interested in knowing whether their readmission rate for pneumonia was less than the national percentage. They found 5 patients out of 70 treated for pneumonia in a two-month period were readmitted. Complete parts (a) through (d) below. a. What is p, the sample proportion of readmission? (Type an integer or a decimal. Round to three decimal places as needed.)Base Rate Fallacy Illustration and Simpson's Paradox Base Rate Fallacy: Israeli data: How can efficacy vs. severe disease be strong when 60% of hospitalized are vaccinated? This was asked in Aug. 2021 when Israel shared the data on the number of vaccinated who were hospitalized. The "60% of hospitalized are vaccinated" implies that vaccination is not working. However, this is a case not only of Base Rate Fallacy but also Simpson's Paradox. (Video on these topics are linked. Please watch if you have not yet.) This assignment is going to take you through the data and calculations to understand how these two statistical phenomena can occur. Table A Age All Ages Population Size Not Vax Fully Vax Severe Cases Not Vax 214 Fully Vax 301 1. Find the proportion of Fully Vax in the hospital with severe cases. Is this close to 60% like the headlines in the news claims?Pest Control In an experiment to test the effectiveness of the latest roach trap, the "Roach Resort," 500 roaches were placed in the vicinity of the trap and left there for an hour. At the end of the hour, it was observed that 20 of them had "checked in," while the rest were still scurrying around. (Remember that "once a roach checks in, it never checks out." Let 1 not checked in, and 2 = checked in.) (a) Set up the transition matrix P for the system with decimal entries. 0.96 0 Calculate p² 0.9216 0 0.04 1 0.0784 1 Calculate p3 0.884736 0 0.1168 x 1 (b) If a roach begins outside the "Resort," what is the probability of it "checking in" by the end of 1 hour? 2 hours? 3 hours? 1 hour 0.04 2 hours 0.0784 3 hours 0.1168 (c) What do you expect to be the long-term impact on the number of roaches? Eventually, all the roaches will have checked in. Eventually, all the roaches will not have checked in. There is not enough information.
