A new model of a car is advertised as getting 25.3 mpg. A consumer group decides to test this claim.

Part 1 of 3

(i)

The consumer group takes a random sample of50cars and conducts a two-tailed test with a 0.01 level of significance. Assuming thatis unknown, what are the critical values for the critical region?

(ii)

After running the above test, the consumer group decided that the only real concern was if the miles per gallon were less than 25.3. Assuming thatis unknown and the same level of significance, what is the new critical value for the critical region? (Usea tableortechnology.)