We want to conduct a hypothesis test of the claim that the population mean score on a nationwide examination in anthropology is different from 495. So, we choose a random sample of exam scores. The sample has a mean of 484 and a standard deviation of 76. For each of the following sampling scenarios, choose an appropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic. Round your answers to two decimal places. (a) The sample has size 16, and it is from a normally distributed population with an unknown standard deviation. Oz=0 O It is unclear which test statistic to use. (b) The sample has size 11, and it is from a normally distributed population with a known standard deviation of 75. oz=0 O It is unclear which test statistic to use. X

Use five-step hypothesis testing for each of the following problems.  Number each of the five steps.  You may use the traditional method or the p-value method.   1) Science fiction novels average 250 pages in length.  The average length of 8 randomly chosen novels written by I. M. Wordy was 265 pages in length with a standard deviation of 35.  At  are Wordy's novels significantly longer than the average science fiction novel? Use five-step hypothesis testing. 2) The average monthly cell phone bill was reported to be $50.07 by the U.S. Wireless Industry.  Random Sampling of a large cell phone company found the following monthly cell phone charges (in dollars):                                                                                                                                                                                                                                                   At the 0.01 level of significance, can it be concluded that the average phone bill has…

We want to conduct a hypothesis test of the claim that the population mean score on a nationwide examination in anthropology is different from 513. So, we choose a random sample of exam scores. The sample has a mean of 518 and a standard deviation of 70. For each of the following sampling scenarios, choose an appropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic. Round your answers to two decimal places. (a) The sample has size 13, and it is from a population with a distribution about which we know very little. Aa O z = = 0 O It is unclear which test statistic to use. (b) The sample has size 15, and it is from a normally distributed population with a known standard deviation of 78. O z = ] -0 O t = O It is unclear which test statistic to use.

We want to conduct a hypothesis test of the claim that the population mean score on a nationwide examination in anthropology is different from 503. So, we choose a random sample of exam scores. The sample has a mean of 510 and a standard deviation of 74. For each of the following sampling scenarios, choose an áppropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic. Round your answers to two decimal places. (a) The sample has size 13, and it is from a population with a distribution about which we know very little. O z = OtD It is unclear which test statistic to use. (b) The sample has size 19, and it is from a normally distributed population with an unknown standard deviation. s ? It is unclear which test statistic to use.

We want to conduct a hypothesis test of the claim that the population mean score on a nationwide examination in anthropology is different from 499. So, we choose a random sample of exam scores. The sample has a mean of 515 and a standard deviation of 73. For each of the following sampling scenarios, choose an appropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic. Round your answers to two decimal places. (a) The sample has size 15, and it is from a population with a distribution about which we know very little. Z= Ot= OIt is unclear which test statistic to use. (b) The sample has size 11, and it is from a normally distributed population with an unknown standard deviation. OZ= -0 OIt is unclear which test statistic to use. Ot=

We want to conduct a hypothesis test of the claim that the population mean reading speed of second graders is different from 30.6 words per minute. So, we choose a random sample of students' reading speeds. The sample has a mean of 31.1words per minute and a standard deviation of 2.8 words per minute. For each of the following sampling scenarios, choose an appropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic. Round your answers to two decimal places. The sample has size 100, and it is from a non-normally distributed population with a known standard deviation of 2.7.           The sample has size 20, and it is from a normally distributed population with an unknown standard deviation.

We want to conduct a hypothesis test of the claim that the population mean reading speed of second graders is different from 29.1 words per minute. So, we choose a random sample of students' reading speeds. The sample has a mean of 28.7 words per minute and a standard deviation of 3.8 words per minute.For each of the following sampling scenarios, choose an appropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic. Round your answers to two decimal places.

We want to conduct a hypothesis test of the claim that the population mean score on a nationwide examination in anthropology is different from 535. So, we choose a random sample of exam scores. The sample has a mean of 520 and a standard deviation of 80. For each of the following sampling scenarios, choose an àppropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic. Round your answers to two decimal places. (a) The sample has size 100, and it is from a non-normally distributed population with a known standard deviation of 76. O z = 3D t = It is unclear which test statistic to use. Aa (b) The sample has size 16, and it is from a normally distributed population with an unknown standard deviation. O It is unclear which test statistic to use.

We want to conduct a hypothesis test of the claim that the population mean score on a nationwide examination in biology is different from 511. So, we choose a random sample of exam scores. The sample has a mean of 490 and a standard deviation of 78. For each of the following sampling scenarios, choose an appropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic. Round your answers to two decimal places. (a) The sample has size 85, and it is from a non-normally distributed population with a known standard deviation of 77. OZ = 0 Ot= O It is unclear which test statistic to use. (b) The sample has size 12, and it is from a normally distributed population with an unknown standard deviation. O Z= Ot= O It is unclear which test statistic to use. X