7.2 - Reject or Fail to Reject? Part 2

A random sample of 50 medical school applicants at a university has a mean raw score of 31 on the multiple choice portions of the MCAT. A student says that the mean raw score for the school’s applicants is more than 30. Assume the population standard deviation is 2.5. What is the claim?

• μ > 30

• μ ≥ 30

• μ < 30

• μ ≤ 30

A random sample of 50 medical school applicants at a university has a mean raw score of 31 on the multiple choice portions of the MCAT. A student says that the mean raw score for the school’s applicants is more than 30. Assume the population standard deviation is 2.5. Is the claim the Ho or the Ha?

• Ho

• Ha

A random sample of 50 medical school applicants at a university has a mean raw score of 31 on the multiple choice portions of the MCAT. A student says that the mean raw score for the school’s applicants is more than 30. Assume the population standard deviation is 2.5. The p-value = .002 and α=.01. Do you reject or fail to reject the Ho?

• Reject

• Fail to Reject

A random sample of 50 medical school applicants at a university has a mean raw score of 31 on the multiple choice portions of the MCAT. A student says that the mean raw score for the school’s applicants is more than 30. Assume the population standard deviation is 2.5. The p-value = .002 and α=.01. Is there enough evidence to support the claim?

• Yes

• No

A fast food restaurant estimates that the mean sodium content in one of its breakfast sandwiches is no more than 920 milligrams. A random sample of 44 breakfast sandwiches has a mean sodium content of 925 milligrams. Assume the population standard deviation is 18 milligrams. What is the claim?

• μ > 920

• μ ≥ 920

• μ < 920

• μ ≤ 920

A fast food restaurant estimates that the mean sodium content in one of its breakfast sandwiches is no more than 920 milligrams. A random sample of 44 breakfast sandwiches has a mean sodium content of 925 milligrams. Assume the population standard deviation is 18 milligrams. Is the claim the Ho or the Ha?

• Ho

• Ha

A fast food restaurant estimates that the mean sodium content in one of its breakfast sandwiches is no more than 920 milligrams. A random sample of 44 breakfast sandwiches has a mean sodium content of 925 milligrams. Assume the population standard deviation is 18 milligrams. At p-value = .0326 and α=.10, do you reject or fail to reject the Ho?

• Reject

• Fail to Reject

A fast food restaurant estimates that the mean sodium content in one of its breakfast sandwiches is no more than 920 milligrams. A random sample of 44 breakfast sandwiches has a mean sodium content of 925 milligrams. Assume the population standard deviation is 18 milligrams. At p-value = .0326 and α=.10, do you have enough evidence to support the claim?

• Yes

• No