250 Year 1 students took an Intermediate level Statistics test. The scores were normally distributed with a mean of 70 and a standard deviation of 5. i) What percentage of scored are between scores 65 and 75? ii) What percentage of scored are between scores 60 and 85? iii) What percentage of scores is greater than a score of 80? iv) Approximately how many scored between scores of 60 and 70 ? ii) What interval contains 95% of all X values? iii) What interval contains 99% of all X values?

In ATUV, TU || WX. Given that VT=21, VW=9, and TU=49, find WX. T W V X U WX= X McGraw Hill LLC

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Ornithologists have determined that some species of birds tend to avoid flights over large bodies of water during daylight hours. It is believed that more energy is required to fly over water than land because air generally rises over land and falls over water during the day. island 4 km 16 km W L D nest @ A bird with these tendencies is released from an island that is 4 km from the nearest point B on a straight shoreline, flies to a point C on the shoreline, and then flies along the shoreline to its nesting area D. Points B and D are 16 km apart. Assume that the bird instinctively chooses a path that will minimize its energy expenditure. (Round your answers to two decimal places.) (a) In general, if it takes 1.2 times as much energy to fly over water as land, to what point C should the bird fly in order to minimize the total energy expended in returning to its nesting area? km from B (b) Let W and L denote the energy (in joules) per kilometer flown over water and land, respectively.…