Question

Problem 1 The mean age for King's Colege students for a recent Fall term was 30.4. Suppose that 16 Winter students were randomly selected. The mean age for the sample was 32.7 . The sample standard deviation was calculated to be 12 . we are interested in the true mean age for Winter King's College students Collaose A a. (.10) = b. (.10) $12 (20) The standard error for = 95% confidence interval for the sample mean. LL (lower lmit) d. (.20) The t value for a confidence inter alis e. (.20) Construct a 95% Fil in the blanks to clarify the following diagram. UL (upper limit)

Answer 1

a)xbar=32.7

b)s =12

c) std error for xbar =12sqrt(16)=3

d) t value =2.131

e)LL =mean-t*std error =32.7-2.131*3=26.307

UL=mean+t*std error =32.7+2.131*3=39.093

f)

YES