The body temperature of patients suffering from a kind of virus is normally distributed with unknown population mean and standard deviation of 0.4 degree Celsius. A sample of 20 such patients is selected for investigation,
and the sample mean is 38.5 degree Celsius.
(a) Find a point estimate of the population mean body temperature of the patients.
(b) Calculate the sampling error at 90% confidence.
(c) Construct a 90% confidence interval estimate of the population mean body temperature of the patients.

Richard save $32 in march he saved $48 in april and $38 in may then richard spent $113 on a keyboard how much money does richard have left

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).

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10