The heat involved in calories per gram of a cement mixture is approximately normally distributed. the mean is thought to be 90 and the standard deviation 2. we wish to test h0: µ = 90 versus µ ≠ 90 with a sample of size n = 10 specimens. (a) if the fail to reject region (ftr) is defined as 88.5 91.5   x find the type i error. (b) find β for the case where the true mean heat has evolved to 93.

According to the 2008 u. s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.