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- In a study, the effects of the mane of a male lion as a signal of quality to mates and rivals was explored. Four life-sized dummies of male lions provided a tool for testing female response to the unfamiliar lions whose manes varied by length (long or short) and color (blonde or dark). The female lions were observed to see whether they approached each of the four life-sized dummies. Complete parts (a) through (e) below. a. Identify the experimental units. Choose the correct answer below. The female lions The male dummies The mane colors The mane lengths Part 2 b. Identify the response variable. Choose the correct answer below. A. Whether or not (yes or no) the mane length affected how the female lions reacted to a male dummy. B. Whether or not (yes or no) the female lions approached the same dummies. C. Whether or not (yes or no) the female lions approached a male dummy. D. Whether or not…Interpret effect size t(30)=1.12, p=.34, n2=.001 small, medium, or largeA city's transportation committee has conducted research on traffic and car accidents for downtown streets. There is a 9% chance of being involved in a car accident when 15 or more cars are driving on Johnson Street and a 7.5% chance when 20 or more cars are driving on Dublin Street. The two streets intersect to form a risk area with a radius of 0.1 mi. Approximate the density of cars per square mile in the risk area when 17 cars are on Johnson Street and 21 cars are on Dublin Street. Use 3.14 for pi. There are approximately 1,210 cars per square mile in the risk area. There are approximately 2,674 cars per square mile in the risk area. There are approximately 2,165 cars per square mile in the risk area. There are approximately 1,082 cars per square mile in the risk area.
- a) An experimenter, Mr Mafanela would like to investigate the effects of a treatment with five levels A, B, C, D, and E. However he could only afford to take twenty observations in five blocks which could only be of size four each. (i) Sketch the layout of the data. (ii) Check whether Mr Mafanela design is balanced or not.A researcher collected how many grams of fat people on a specific diet consumed at breakfast and at lunch. The data for a sample of 8 people is shown in the table below. xx 11.3 8.2 7.2 3.6 2.3 2.5 2.7 0.4 yy 13.7 10.7 10.2 7.2 6.3 6.5 6.1 4.1 xx = grams of fat in breakfastyy = grams of fat in lunchThis data can be modeled by the equation ˆy=0.84x+4.07.y^=0.84x+4.07.Given this, how many grams of fat in lunch would be expected for a person who consumed 1.2 grams of fat at breakfast? Round to 1 decimal place.Answer =A crayon manufacturer is comparing the effects of two kinds of yellow dye on the brittleness of crayons. Dye B is more expensive than dye A, but it is thought that it might produce a stronger crayon. Four crayons are tested with each kind of dye, and the impact strength (in joules) is measured for each. The results are as follows: Dye A: 1.0 2.0 1.2 3.0 Dye B: 3.0 3.2 2.6 3.4 a) Can you conclude that the mean strength of crayons made with dye B is greater than that of crayons made with dye A? b) Can you conclude that the mean strength of crayons made with dye B exceeds that of crayons made with dye A by more than 1 J?