5)
[5 pts] Teratciosidrodena studies the behaviour of black bears. She
has come to the conclusion that the cutting down of trees has
affected the areas the bears use on a daily basis. This is called
the home range. Teratciosidrodena has calculated the home range in
square kilometres. The mean home range from her studies is 26.28
square kilometres with a standard deviation of 11.47 square
kilometres. How many black bears should she study if she wants to
be 95 % confident that the mean is within 5 square kilometres of
the population mean?