How to solve it? Take a Test - Grace Park - Chrome X mathxl.com/Student/PlayerTest.aspx?testld=214053738¢erwin=yes Fotopoulos -Mgtop 215 - Spring 2020 - Section 1 Test:

How to solve it?

Take a Test - Grace Park - Chrome X " mathxl.com/Student/PlayerTest.aspx?testld=214053738&centerwin=yes Fotopoulos -Mgtop 215 - Spring 2020 - Section 1 Test: Midterm 2 Time Remaining: 01:08:42 Submit Test This Question: 1 pt 4 of 8 (4 complete) This Test: 8 pts possible A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 79 and a standard deviation of 7. Complete parts (a) through (d). b. What is the probability that a student scored between 72 and 94? The probability that a student scored between 72 and 94 [s (Round to four decimal places as needed.) c. The probability is 25% that a student taking the test scores higher than what grade? The probability is 25% that a student taking the test scores higher than (Round to the nearest integer as needed.) d. If the professor grades on a curve (for example, the professor could give A's to the top 10% of the class, regardless of the score), is a student better off with a grade of 86 on this exam or a grade of 76 on a different exam, where the mean is 68 and the standard deviation is 4? Show your answer statistically and explain. A student is with a grade of 86 on this exam because the Z value for the grade of 86 is and the Z value for the grade of 76 is (Round to two decimal places as needed.) Enter your answer in each of the answer boxes ? S WTake a Test - Grace Park - Chrome " mathxl.com/Student/PlayerTest.aspx?testld=214053738&centerwin=yes Fotopoulos -Mgtop 215 - Spring 2020 - Section 1 Test: Midterm 2 Time Remaining: 01:08:46 Submit Test This Question: 1 pt 4 of 8 (4 complete) This Test: 8 pts possib A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 79 and a standard deviation of 7. Complete parts (a) through (d). a. What is the probability that a student scored below 90 on this exam? The probability that a student scored below 90 is (Round to four decimal places as needed.) b. What is the probability that a student scored between 72 and 94? The probability that a student scored between 72 and 94 is (Round to four decimal places as needed.) c. The probability is 25% that a student taking the test scores higher than what grade? The probability is 25% that a student taking the test scores higher than (Round to the nearest integer as needed.) d. If the professor grades on a curve (for example, the professor could give A's to the top 10% of the class, regardless of the score). is a student better off with a grade of 86 on this exam or a grade of 76 on a different exam, where the mean is 68 and the standard deviation is 4? Show your answer statistically and explain. Enter your answer in each of the answer boxes S W