• Typing in the TEXT ENTRY, Indicate which statistical test each of the following scenarios represents (either 1 sample z or 1 sample t).

SCENARIO 1: A national survey of students using a grammar-checking function in a word-processing software program produces an average number of errors to be =12 per page. We ask a sample of Chaffey students to count the number of errors per page without using the grammar-checking function. Does the sample of students make more or fewer grammatical errors than the population? The sample scores are: 9, 12, 10, 9, 6, 7. SCENARIO 2: The population average in Exam 2 grade for students in all sections taking Social Science 10, spring 2017 is 74.017 with corresponding standard deviation of 21.292. A study group of seven students was formed and has been reviewing exam material consistently, earning the group average of 74.201. SCENARIO 3: It's known that the commuting distance of U.S. workers averages 13 miles with a population standard deviation of 2 miles. An investigator wishes to determine if workers in her city commute more miles than the population average. She selects a random sample of 169 workers from her city and finds the mean to be 15.5 miles. What will she conclude? SCENARIO 4: It's known that the commuting distance of U.S. workers averages 13. An investigator wishes to determine