The director of research and development is testing a new drug. She wants to know if there is evidence at the 0.05 level that the drug stays in the system for more than 314 minutes. For a sample of 7 patients, the average time the drug stayed in the system was 319 minutes with a standard deviation of 21. Assume the population distribution is approximately normal.
Step 1 of 5: State the null and alternative hypotheses.
Step 2 of 5: Find the value of the test statistic. Round your answer to three decimal places.
Step 3 of 5: Specify if the test is one-tailed or two-tailed.
Step 4 of 5: Determine the decision rule for rejecting the null hypothesis. Round your answer to three decimal places.
Step 5 of 5: Make the decision to reject or fail to reject the null hypothesis.
The director of research and development is testing a new drug. She wants to know if...
The director of research and development is testing a new drug. She wants to know if there is evidence at the 0.025 level that the drug stays in the system for less than 393 minutes. For a sample of 17 patients, the mean time the drug stayed in the system was 387 minutes with a variance of 625. Assume the population distribution is approximately normal. Step 1 of 5: State the null and alternative hypotheses. Step 2 of 5: Find...
The director of research and development is testing a new drug. She wants to know if there is evidence at the 0.05 level that the drug stays in the system for more than 357 minutes. For a sample of 62 patients, the mean time the drug stayed in the system was 365 minutes. Assume the population variance is known to be 441. Step 1 of 3: State the null and alternative hypotheses. Step 2 of 3: Find the P-value for...
The director of research and development is testing a new drug. She wants to know if there is evidence at the 0.050.05 level that the drug stays in the system for more than 377377 minutes. For a sample of 1818 patients, the average time the drug stayed in the system was 381381 minutes with a standard deviation of 2121. Assume the population distribution is approximately normal. What is the null hypothesis Find the P-value for the hypothesis test. Round your...
The director of research and development is testing a new medicine. She wants to know if there is evidence at the 0.01 level that the medicine relieves pain in more than 331 seconds. For a sample of 14 patients, the mean time in which the medicine relieved pain was 333 seconds with a standard deviation of 22 . Assume the population distribution is approximately normal. Step 1 of 5: State the null and alternative hypotheses. Step 2 of 5: Find...
The director of research and development is testing a new medicine. She wants to know if there is evidence at the 0.05 level that the medicine relieves pain in less than 371 seconds. For a sample of 12 patients, the average time in which the medicine relieved pain was 368 seconds with a standard deviation of 20. Assume the population distribution is approximately normal. Step 1 of 5: State the null and alternative hypotheses. Step 2 of 5: Find the...
The director of research and development is testing a new medicine. She wants to know if there is evidence at the 0.1 level that the medicine relieves pain in more than 358 seconds. For a sample of 62 patients, the mean time in which the medicine relieved pain was 366 seconds. Assume the population standard deviation is 21 . Step 1 of 6: State the null and alternative hypotheses. Step 2 of 6: Find the value of the test statistic....
The director of research and development is testing a new medicine. She wants to know if there is evidence at the 0.05 level that the medicine relieves pain in more than 318 seconds. For a sample of 44 patients, the mean time in which the medicine relieved pain was 323 seconds. Assume the population variance is known to be 324. Step 1 of 6: State the null and alternative hypotheses. Step 2 of 6: Find the value of the test...
The director of research and development is testing a new drug. She wants to know if there is evidence at the 0.05 level that the drug stays in the system for more than 307 minutes. For a sample of 70 patients, the mean time the drug stayed in the system was 310 minutes. Assume the standard deviation is known to be 21 . Step 2 of 5 : Enter the value of the z test statistic. Round your answer to...
The director of research and development is testing a new drug. She wants to know if there is evidence at the 0.02 level that the drug stays in the system for more than 379 minutes. After performing a hypothesis test, she decides to reject the null hypothesis. What is the conclusion?
The director of research and development is testing a new drug. She wants to know if there is evidence at the 0.020.02 level that the drug stays in the system for more than 388388 minutes. After performing a hypothesis test, she decides to reject the null hypothesis. What is the conclusion?