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Dog A barks 20 times in 2 minutes, Dog B barks 45 times in 5 minutes, and Dog C barks 66 times in 6 minutes. Which dog barks the most number of times per minute?Dog A barks the most times per minute.Dog B barks the most times per minute.Dog C barks the most times per minute.Dog A and Dog B bark the most times per minute.Dog B and Dog C bark the most times per minute.Dog A barks 20 times in 2 minutes, Dog B barks 45 times in 5 minutes, and Dog C barks 66 times in 6 minutes. Which dog barks the most number of times per minute?Dog A barks the most times per minute.Dog B barks the most times per minute.Dog C barks the most times per minute.Dog A and Dog B bark the most times per minute.Dog B and Dog C bark the most times per minute.
General
6 months ago
What are the solutions of the equation x4-9x^2+8=0 use
General
6 months ago
(-4c? + 7cd + 8d) + (-3d + 8c2 + 4cd)
General
6 months ago
Brittany is writing a business report about protecting workplace data and will be conducting an interview with a data security expert. What is the best advice you can give her? a. Call before the interview to confirm the arrangements, and then arrive on time. b. Learn about the individual she is interviewing, and research the background and terminology of the topic. c. Use open-ended questions rather than yes-or-no questions to draw out the responses from the expert. d. Brittany should complete all these steps.
General
6 months ago
Of the 500 sample households in the previous exercise, 7 had three or more large-screen TVs. (a) The percentage of households in the town with three or more largescreen TVs is estimated as ; this estimate is likely to be off by or so. (b) If possible, find a 95%-confidence interval for the percentage of all 25,000 households with three or more large-screen TVs. If this is not possible, explain why not.
General
6 months ago
Consider the following hypothesis test. The following data are from matched samples taken from two populations. Population Element 1 2 1 21 20 2 28 26 3 18 18 4 20 20 5 26 24 Compute the difference value for each element. If your answer is "0", enter 0.a. Compose the difference valuefor each element.b. Compute d.c.Compute the standard deviation sd.d.Conduct a hypothesis test using α=.05.What is yourconclusion?
General
6 months ago
10 black balls and 5 white balls are placed in an urn. Two balls are then drawn in succession. What is the probability that the second ball drawn is a white ball if the second ball is drawn without replacing the first ball?a) 0.3333b) 0.2381c) 0.0952d) 0.2143e) 0.3111
General
6 months ago
For the amusement of the guests, some hotels have elevators on the outside of the building. One such hotel is 300 feet high. You are standing by a window 100 feet above the ground and 150 feet away from the hotel, and the elevator descends at a constant speed of 30 ft / sec , starting at time t = 0 , where t is time in seconds. Let θ be the angle between the line of your horizon and your line of sight to the elevator. (a) Find a formula for h(t), the elevator's height above the ground as it descends from the top of the hotel h(t) 300-25t (b) Using your answer to part (a), express θ as a function of time e. Find the rate of change of θ with respect to t. de dt to you to be moving. At what time does the elevator appear to be moving fastest? The rate of change of θ is a measure of how fast the elevator appears time tc) seconds At what height does the elevator appear to be moving fastest?
General
6 months ago
Consider the two triangles.Triangles L M N and X Y Z are shown. Side L M is blank, side M N is 3, and side N L is 2. Side X Y is 12, side Y Z is 9, and side Z X is blank.To prove that △LMN ~ △XYZ by the SSS similarity theorem using the information provided in the diagram, it would be enough additional information to know thatLM is 3 units and XZ is 5 units.LM is 4 units and XZ is 6 units.LM is 5 units and XZ is 3 units.LM is 6 units and XZ is 4 units.
General
6 months ago
Circle G and X connect at point Y. The length of G Y is 10 centimeters and the length of Y X is 16 centimeters.Point G is the center of the small circle. Point X is the center of the large circle. Points G, Y, and X are all on line segment GX.Marco wants to create a new circle using GX as a radius. What will be the area of Marco’s new circle?10Pi centimeters squared16Pi centimeters squared356Pi centimeters squared676Pi centimeters squared
General
6 months ago
How much would $600 be worth after 10 years, if it were invested at 4%interest compounded continuously? (Use the formula below and round youranswer to the nearest cent.)Aft) = Poet
General
6 months ago
A manufacturing process produces bags of chips whose weight is N(16 oz, 1.5 oz). On a given day, the quality control officer takes a sample of 36 bags and computed the mean weight of these bags. The probability that the sample mean weight is below 16 oz isGroup of answer choices:A. 0.55B. 0.45C. 0.50D. 0.60
General
6 months ago
Researchers are planning a study to estimate the impact on crop yield when no-till is used in combination with residue retention and crop rotation. Based on data from a meta-analysis of 610 small farms, the researchers estimate there is a 2.5% decline in crop yield when no-til is used with residue retention and crop rotation. Suppose the researchers want to produce a 90% confidence interval with a margin of error of no more than 7.0%. Determine the minimum sample size required for this study. The sample size needed to create a confidence interval estimate depends on the margin of error, the initial estimated proportion, and the confidence level. Be sure to use proportions rather than percentages. Round your final answer up to the nearest whole number. n=_____________________held comparisons
General
6 months ago
The null hypothesis for an ANOVA is that all treatments/samples come from populations with the same mean. The alternative hypothesis is best stated as: "" of the population means is different from the others.
General
6 months ago
a) Γ(n) =∫[infinity]0tn−1e−tdta)Show that Γ(n+ 1) =nΓ(n) using integration by parts.b) Show that Γ(n+ 1) =n! , wherenis a positive integer, by repeatedly applying the result in parta)c) Compute Γ(5).d) Prove what the value of Γ(12) should be by evaluating the gamma function forn= 1/2 and usingthe fact that∫[infinity]0e−u2du=√π2.
General
6 months ago
Identify the inequality that represents the following problem "Two more than three times a number is at least eight" What is the solution set?a. 2 ≥ 8+3nb. 3n+2 > 8c. 3n+2 ≥ 8d. 2 > 8+3nWill give brainlyest
General
6 months ago
Given the system of equations presented here:2x + 4y = 144x + y = 20Which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? (5 points) aMultiply the second equation by −4 to get −16x − 4y = −80 bMultiply the second equation by −1 to get −4x − y = −20 cMultiply the first equation by 2 to get 4x + 8y = 28 dMultiply the first equation by −1 to get −2x − 4y = −14
General
6 months ago
Find the midpoint of the line segment joining the points (10,7) and (negative 2,negative 7).
General
6 months ago
When 2/3 of the garments in the shipment were inspected, 18 of the garments passed inspection and the remaining 2 garments failed. How many of the uninspected garments must pass inspection in order that 90 percent of the garments in the shipment pass?A. 10B. 9C. 8D. 7E. 5
General
6 months ago
The authors of a paper describe an experiment to evaluate the effect of using a cell phone on reaction time. Subjects were asked to perform a simulated driving task while talking on a cell phone. While performing this task, occasional red and green lights flashed on the computer screen. If a green light flashed, subjects were to continue driving, but if a red light flashed, subjects were to brake as quickly as possible. The reaction time (in msec) was recorded. The following summary statistics are based on a graph that appeared in the paper.n = 47 x = 525s = 75(a) Construct a 95% confidence interval for μ, the mean time to react to a red light while talking on a cell phone. (Round your answers to three decimal places.)(b) Suppose that the researchers wanted to estimate the mean reaction time to within 7 msec with 95% confidence. Using the sample standard deviation from the study described as a preliminary estimate of the standard deviation of reaction times, compute the required sample size. (Round your answer up to the nearest whole number.)
General
6 months ago
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