I NEED ALL ANSWERS ASAP
One section of a pharmaceutical manufacturing plant is designed to have a mean
temperature of -10°C. The temperature is measured 19 times over the course of a day and
it is found that the sample mean is -9.7°C, while there is a sample standard deviation
of 0.35°C. Does the evidence indicate (at the 5% significance level) that the mean
temperature is different to -10°C?