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Question 2 1.25 pts In Europe, 53% of flowers of the rewardless orchid, Dactylorhiza sambucina are yellow, whereas the remaining flowers are purple (Gigord et
Question 2 1.25 pts In Europe, 53% of flowers of the rewardless orchid, Dactylorhiza sambucina are yellow, whereas the remaining flowers are purple (Gigord et al. 2001). If we took a random sample of five individuals, what is the probability that at least three would be yellow? Include the leading zero, and state your answer to three decimal places. Question 3 2.05 pts The crab spider, Thomisus spectabi/is, sits on flowers and preys upon visiting honeybees. Do honeybees distinguish between flowers that have crab spiders and flowers that do not? To test this, Heiling et al. (2003) gave 34 bees a choice between 2 flowers: one with, and one without a crab spider. In 23 of the 34 trials, the bees picked the flower that had the spider. In the other trials, the bees chose the spiderless flower. With these data, carry out the appropriate hypothesis test (one- or two-tailed), usingthe normal approximation to the binomial distribution to determine 2. For a onetailed test, use the formula :(1NORM.D|ST(Z,0,1,TRUE) in Excel calculate P. For a two-tailed test, use the formula =2('l-NOF{M.DIST(Z,O,1,TRUE). State your answer for the value of Pto three decimal places, and include the leading zero. 0 Do all of the math in Excel 0 DO NOT round the value on. - Substitute the cell (eg. Bl) for Z in the formula for P
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