Question

The supergopher is a device invented to drill through arctic pack ice, which uses heated water in a coil to melt through ice. 14 test holes were drilled in randomly selected locations, with an average drilling speed of 2.375 feet/hour and a standard deviation of 0.33 feet/hour. The manufacturer claims that the supergopher is capable of drilling more than 2.5 feet/hour on average. At the 5% level of significance, do the data support that the supergopher is capable of drilling more than 2.5 feet/hour on average. You may assume that the population

distribution of drilling speeds with the supergopher is approximately normally distributed

state the null and alternative hypothesis

report the p value and how you got it

interpret your results with a conclusion. Be specific

Answer 1