1. A psychiatrist reads that the average age of someone who's first diagnosed with schizophrenia is 24 years. The psychiatrist suspects that the schizophrenic patients in her clinic were diagnosed at a younger age than 24. She examines records for a random sample of 17 clinic patients and finds that the age at first diagnosis in the sample is 23.5 years on average with a standard deviation of 2 years. Given the 0.05significance level, what is the value of the test statistic?

Select one:

a. 1.03

b. -1.746

c. -1.03

d. 1.746

The table below represents the distribution of the annual number of days over 100 degrees Fahrenheit for Kingston for a sample of 80 years from 1905 to 2004. Calculate correct to the nearest whole number the modal value for this distribution. Days Above 100 Degrees Number of Years 0 -9 25 10 - 19 33 20 - 29 14 30 - 39 5 40 - 49 N 50 - 59 O 15OF O 25OF O 12OF O 33OF