A scientist in America made lots of experiments (measured temperature of a solution). The expected value of the result was 65 degree Fahrenheit and the variance was 15 degree Fahrenheit. This scientist wants to publish the result in an European journal and has to convert the temperature values into Celsius.

what is the expected value and variance of the results in Celsius

The following table describes the relationship between hospitalization and student gender.

Does there exist a statistically significant association between gender and hospitalization (during last 2 years). Let alpha = 0.05

hospitality Female Male

not needed 339 97

has been hospitalized 34 10