A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 76 and a standard deviation of 7 Complete parts (x) though CED
a. What is the probability that a student sooned below 86 on this exam? The probability that a student scored below 86 is (Round to four decimal places as needed)
b. What is the probability that a student scored between 0 and 94? The probability that a student scored between 60 and 94 (Round to four decimal places as needed.)
c. The probability is 25% that a student taking the test scones 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 50 on the exam or a grade of 66 on a different exam where the ne 65 and the standard deviation is 37 Show your answer statistically and explain. and the 2 value for the grade of 68 s
A student is___ with a grade of 90 on this exam because the Z value for the grade of 90 is___(Round to two decimal places as needed)
