1 1+ √2x sec x tan x dx dx sec x - 1 5 dx 3x+1 Find the area of the region bounded by the graphs of the equations. y = 5x x² + 2' x = 1, x = 5, y = 0 Find the solution of the differential equation. LOOM dy sin x dx = 4 at the point(1, 2) X
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- The management of the local zoo wants to know if all of their animal exhibits are equally popular. If there is significant evidence that some of the exhibits are not being visited frequently enough, then changes may need to take place within the zoo. A tally of visitors is taken for each of the following animals throughout the course of a week, and the results are contained in the following table. At a = 0.025, determine whether there is sufficient evidence to conclude that some exhibits are less popular than others. Animal Exhibits at the Zoo Elephants Lions/Tigers Giraffes Zebras Monkeys Birds Reptiles Number of 164 166 172 188 165 139 142 visitors Copy Data Step 4 of 4: Draw a conclusion and interpret the decision. Next Prev 国 Tables E Keypad Answer Keyboard Shortcuts We fail to reject the null hypothesis and conclude that there is sufficient evidence at a 0.025 level of significance that some exhibits are less popular than others. We fail to reject the null hypothesis and conclude…Nlustration 25. Calculate mode from the following data: 50–70 Klarks 0-10 20-40 40–50 10–20 Frequency 32 28 5 15 40calculator Google Search × New Tab Quiz: Practice Questions for Am × + tcinstructure.com/courses/2438849/quizzes/8459601/take D Question 1 uncements 123 les 3365 omes & Events ent Resources 1 pts Assuming there were no buying/selling fees, what would be the total capital gain if 107 shares of DCBA stock were purchased for $33.88 per share and all 107 shares were sold for $41.66 per share six months later? Round your answer to the nearest penny. Input just the number. Do not input the dollar sign. Do not use a comma. Example: 1021.57 Question 2 1 pts Updates e Evaluations Zoe was comparing the variability of three of her stocks. Over the last month EAC stock had a mean price of $32.81 per share with a standard deviation of $1.52, while FJF stock had a mean price of $44.28 per share with a standard deviation of $3.1, and QSR stock had a mean price of $51.7 per share with a standard deviation of $2.79. Out of these three stocks, what was the smallest coefficient of variation? Round your…
- This is a practice exam. I would like to know how to slove usign excel or megastat Wenton Powersports produces dune buggies. They have three assembly lines, “Razor,” “Blazer,” and “Tracer,” named after the particular dune buggy models produced on those lines. Each assembly line was originally designed using the same target production rate. However, over the years, various changes have been made to the lines. Accordingly, management wishes to determine whether the assembly lines are still operating at the same average hourly production rate. Production data (in dune buggies/hour) for the last eight hours are as follows. (You may find it useful to reference the F table.) Razor Blazer Tracer 11 10 9 10 8 9 8 11 10 10 9 9 9 11 8 9 10 7 12 11 8 12 8 9 Click here for the Excel Data File a. Specify the competing hypotheses to…A freshly brewed shot of espresso has three distinct components: the heart, body, and crema. The separation of these three components typically lasts only 10 to 20 seconds. To use the espresso shot in making a latte, a cappuccino, or another drink, the shot must be poured into the beverage during the separation of the heart, body, and crema. If the shot is used after the separation occurs, the drink becomes excessively bitter and acidic, ruining the final drink. Thus, a longer separation time allows the drink-maker more time to pour the shot and ensure that the beverage will meet expectations. An employee at a coffee shop hypothesized that the harder the espresso grounds were tamped down into the portafilter before brewing, the longer the separation time would be. An experiment using 24 observations was conducted to test this relationship. The independent variable Tamp measures the distance, in inches, between the espresso grounds and the top of the portafilter (i.e., the harder the…Suppose Aaron recently purchased an electric car. The person who sold him his new car told him that he could consistently travel 200 mi before having to recharge the car's battery. Aaron began to believe that the car traveled even farther than the company claimed, and he decided to test this hypothesis formally. Aaron drove his car only to work and he recorded the number of miles that his new car traveled before he had to recharge its battery a total of 17 separate times. The table shows the summary of his results. Assume his investigation satisfies all conditions for a one-sample t-test. Mean miles traveled Sample size t-statistic P-value P 207 17 1.48 0.079 The results statistically significant at a = 0.01 because P 0.01. are are not V
- In the production process of a company, 4 units of a certain input are used daily. It happens that the different formulations of this input can affect the yield of the process as well as the level of environmental pollution. On a given day the company has 40 units of this input in stock and they can be classified according to the table below:Why do zebras have stripes? One hypothesis is that stripes help keep biting flies away. Trinity wants to test this hypothesis with an experiment. She will use 15 horses as the subjects in her experiment, and assign them to 3 treatments, as follows: 5 horses will wear a fabric coat that is printed with zebra stripes, as shown above 5 horses will wear nothing 5 horses will wear a fabric coat that is printed with a solid grey colour Trinity will record a video of each horse for 1 hour. She will use the video to determine the number of biting flies that land on the horse's back. a) What types of experimental group do each of (i), (ii), and (iii) represent? Choose from: Main experimental treatment group Classical control Positive control Negative control b) Why is it important for Trinity to include group (iii) in her study? Provide a brief explanation. Hint: you can describe potential scenarios for results to help explain why group (iii) is needed. c) Can you suggest ONE potential…Q1/ Four engineering classes A, B, C and, D were tested for the percentage of students success in the examination of mathematic measured from each one of them. The following table gives the number of students in each class and percentage of students success collected from each class. Compute the followings: Class A D Number of students in each class 25 30 25 20 Percentages of student's success in each class 72% 74% 75% 65% 1-Total percentage of observed failed students? 2- If a certain class is tested randomly, compute the probability that it is success taken from class B and D?
- A certain sample of E. Coli has 2.5 times the population every hour. If the sample began with 50 cells, which of the following is closest to the population of the sample after 4 hours?Environment-friendly agricultural practice includes the application of pesticides when it is really necessary, e.g., at the beginning of a pest emergence. Such practice, depending on the field conditions, and the reaction of growers, for the same level of “alert”, inspired this question.Assume that in the middle of the growing season in a given area, there is one pest emergence every two weeks on average. There is a generalized emergence of pests in a given area. At this stage of the emergence, not all growers decide to apply pesticides, hoping that the emergence will be brief or without implication for their field. Accordingly, assume 75% of the growers in that area at that time decide to apply pesticides. a) What is the probability that among five growers randomly sampled, two decide not to apply pesticides? b) What is the probability that among 10 randomly sampled growers, more than nine decide to apply pesticides?