In the year 2010 it was estimated the amazon rain forest was home to
60 000 poison arrow frogs. due to loss of habitat the number of frogs is
falling at a rate of 15% per annum. calculated the estimate number of frogs
there will be in 2014.

Is the orthocenter of a triangle on the inside ?

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).

I’m stuck on this equation, anyone got the answer?