6. a) A medical researcher tested a new treatment for poison ivy against the traditional ointment. Given the null and alternative hypotheses, explain what a Type 1 and a Type 2 error is and the consequences of each one. Ho: the treatments are the same Ha: the new treatment is better Type I: Consequence: Type II : Consequence: Which is more serious? 7. Put the letter or symbol used to describe each of the following in the space provided: Mean of the population Mean of the sample Standard deviation of the population Standard deviation of the sample 8. If I were to take a normal distribution and a random sample of 30, is this a large enough sample to use the Central Limit Theorem? If I were to take a normal distribution and a random sample of 10, is this a large enough sample to use the Central Limit Theorem? If I were to take a skewed distribution and a random sample of 30, is this a large enough sample to use the Central Limit Theorem? If I were to take a skewed distribution and a random sample of 10, is this a large enough sample to use the Central Limit Theorem