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15

Sue is recording what kind of shoes people are wearing at the mall. Out of the 14 people she
has seen, 2 are wearing high heels. What is the experimental probability that the next person
Sue sees will be wearing high heels?

Simplify your answer and write it as a fraction or whole number.

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).