1) what is the difference between a type one and a type II error

2) what are the steps to conducting a hypothesis test (in your answer, differentiate between the critical test statistic and the calculated teststatistic)

3) The standard deviation of the weights of elephants is approximately 15 pounds. We wish to construct a 95% confidence interval for the mean weight of newborn elephant calves. We weighed fifty newborn elephants. The sample mean is 244 pounds. The sample standard deviation is 11 pounds. Construct a 95% confidence interval for the population's mean weight of newborn elephants. State the confidence interval, sketch the graph, and calculate the error bound.

4) The cost of a daily newspaper varies from city to city. However, the variation among prices remains steady with a standard deviation of 20. They did a study to test the claim that the mean cost of a daily newspaper is $1.00. Twelve costs yield a mean cost of 95 with a standard deviation of 18. Do the data support the claim at the 1% level?