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Studies were conducted to investigate whether there is evidence of pheromones(subconscious chemical signals) in female tears...

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Basic Math

Studies were conducted to investigate whether there is evidence ofpheromones(subconscious chemical signals) in female tears thataffect sexual arousal in men. In one of the studies, 50 men had apad attached to the upper lip that contained either female tears ora salt solution dripped down the same females face. each subjectparticipated twice, on consecutive days, once with tears and oncewith saline, randomized for order, and double blind. Testosteronelevels were measured before sniffing and after sniffing on bothdays. while normal testosterone levels vary significantly betweendifferent men, average levels for the group were the same beforesniffing on both days and after sniffing the salt solution (about155 pg/mL) but were reduced after sniffing the tears(about 133 pg/mL). The mean difference in testosterone levels after sniffing thetears was 21.7 with standard deviation 46.5

test to see if testosterone levels are significantly resuced aftersniffing tears. give the test statistic and the p- value. roundyour answer for this test statistic to two decimal places and youranswer for the p-value to three decimal places.

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