At jefferson middle school, eighty-two students were asked which sports they plan to participate in for the coming year. twenty students plan to participate in track and cross country; six students in cross country and basketball; and eight students in track and basketball. twelve students plan to participate in all three sports. a total of thirty students plan to participate in basketball, and a total of forty students plan to participate in cross country. ten students don't plan to participate in any of the three sports.

how many students plan to just participate in basketball?

56
16
30
4

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Evan went to the park and saw for animals each animal was either a duck or dog if he saw a total of 14 legs how many of each animal did he see

Atechnician compares repair costs for two types of microwave ovens (type i and type ii). he believes that the repair cost for type i ovens is greater than the repair cost for type ii ovens. a sample of 6767 type i ovens has a mean repair cost of $79.79$⁢79.79. the population standard deviation for the repair of type i ovens is known to be $19.18$⁢19.18. a sample of 5555 type ii ovens has a mean repair cost of $75.24$⁢75.24. the population standard deviation for the repair of type ii ovens is known to be $21.40$⁢21.40. conduct a hypothesis test of the technician's claim at the 0.050.05 level of significance. let μ1μ1 be the true mean repair cost for type i ovens and μ2μ2 be the true mean repair cost for type ii ovens. step 2 of 4 : compute the value of the test statistic. round your answer to two decimal places.