Question 974085
Mean = 47.4
sd=7.09
n=5
SE=7.09/sqrt(5)=3.17  ;;  Need t-distribution with 4 degrees of freedom, since estimating sample distribution sd.  Also are assuming normal distribution.  

95% CI= +/- 2.776*3.17 which is +/-8.80   

(38.6,56.2)