This table shows how many sophomores and juniors attended two school events
Total
Sophomore
Jazz band Volleyball
concert game
35
42
36
24
71
66
77
Junior
60
Total
137
What is the probability that a randomly chosen person from this group is a
sophomore?
Round your answer to two decimal places.
O A. 0.56
OB. 0.26
O C. 0.52
OD 031
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Atextile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. the company wishes to test the hypothesis upper h subscript 0 baseline colon mu equals 12 against upper h subscript 1 baseline colon mu less-than 12 using a random sample of n equals 4 specimens. calculate the p-value if the observed statistic is x overbar equals 11.8. round your final answer to five decimal places (e.g. 98.76543).