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Please answer by typing The director of an electronic broadcast company wants to determine whether 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 0.1 level that the medicine relieves pain in more than 371 seconds. For a sample of 18 patients, the mean time in which the medicine relieved pain was 379 seconds with a standard deviation of 22 . Assume the population distribution is approximately normal. Step 1 of 3: State the null and alternative hypotheses. Step 2 of 3: Find...
The director of research and development is testing a new medicine. She wants to know if there is evidence at the 0.02 level that the medicine relieves pain in more than 390 seconds. After performing a hypothesis test, she decides to reject the null hypothesis. What is the conclusion? Answer Tables Keypad There is sufficient evidence at the 0.02 level of significance that the medicine relieves pain in more than 390 seconds. There is not sufficient evidence at the 0.02...
The director of research and development is testing a new medicine. She wants to know if there is evidence at the 0.025 level that the medicine relieves pain in less than 335 seconds. For a sample of 15 patients, the mean time in which the medicine relieved pain was 328 seconds with a variance of 576. Assume the population distribution is approximately normal. State null/alternative hypothesis, test statistic, one/two tailed, decision rule for rejection null hypothesis, reject or fail to...
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 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 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...
QUESTION 4 A company that manufactures electronic components wants to evaluate the following hypothesis test, using a level of significance of 0.1. A random sample of 15 components was taken; 9 were tested at 80° F (X1), and 6 were tested at 120° F (X2). Suppose the resulting test statistic is 1.1 and test statistic has t distribution with 13 degree of freedom. You fail to reject null hypothesis.
QUESTION 5 A company that manufactures electronic components wants to evaluate the following hypothesis test, using a level of significance of 0.1. A random sample of 15 components was taken; 9 were tested at 80° F (X1), and 6 were tested at 120° F (X2). Suppose the resulting test statistic is 1.3 and test statistic has t distribution with 13 degree of freedom. You fail to reject null hypothesis. True False
Question 10 - of 24 Step 4 of 5 02:03:44 A medical researcher wants to compare the pulse rates of smokers and non-smokers. He believes that the pulse rate for smokers and non-smokers is different and wants to test this claim at the 0.01 level of significance. A sample of 72 smokers has a mean pulse rate of 82 and a sample of 78 non-smokers has a mean pulse rate of 79. The population standard deviation of the pulse rates...