A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 72 and a standard deviation of 8. Complete parts (a) through (d). a. What is the probability that a student scored below 87 on this exam? The probability that a student scored below 87 is 0.9696 (Round to four decimal places as needed.) b. What is the probability that a student scored between 64 and 93? The probability that a student scored between 64 and 93 is 0.8370 (Round to four decimal places as needed.) c. The probability is 15% that a student taking the test scores higher than what grade? The probability is 15% that a student taking the test scores higher than 80. (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 88 on the exam with a mean of 72 and a standard deviation of 8 or a grade of 72 on a different exam, where the mean is 69 and the standard deviation is 3? Show your answer statistically and explain. A student is ▼with a grade of 88 on the exam with a mean of 72 and a standard deviation of 8 because the Z value for the grade of 88 is and the Z value for the grade of 72 on the different exam is (Round to two decimal places as needed.)

Q: D pls

A:

Q: 14. The vectors a and b are such that |a| = 3, |b| = 5 and a. b = -14, then |a – b| = %3D A 62 B V62

A: Solution: Given vectors a and b such that a=3,  b=5 and a·b=-14

Q: u(z) dr

A:

Q: ab)c=

A: Given,           abc

Q: dX You

A:

Q: 8 mi P 4 mi

A:

Q: p2 sec? r³ dr

A:

Q: 12 R 10 5

A:

Q: b 1. D = c d

A: Determinant of a matrix is a number that is a function of the entries of the matrix. Determinant is…

Q: snip

A: Given

Q: 3. If AB = 8x + 5, CB = 10x - 1, and BD AC, 1 solve for x.

A:

Q: Ch. 2.1) A real estate agent is working to sell homes for 3 different clients. Let Ai, i= 1,2,3 be…

A:

Q: 19

A:

Q: r A D C

A: We have given a diagram;

Q: dy if y =t! and t=Vx Fin d

A: Let's find.

Q: 3) If segment PT 800 feet, find the length of segment PA and segment TA.

A:

Q: r dz dr de.

A:

Q: dA D

A:

Q: 23 (27) What is the exact value of CSC

A: A detailed solution is given below.

Q: D P•

A: CT2=CA*CB

Q: 3. Select the equivalent expression. * OA. 1 8-22 O B. 26 89 o20 Tr

A: use the property of exponents

Q: Find

A:

Q: Given: AB = AC; OB = 0C a. Is it possible to prove that ZAOB = LAOC? b. Is it possible to prove that…

A: Definition used-               SSS congruence -                If three corresponding…

Q: v = [-1, –5,9, –9] |v|| =Ex: 1.234 9 V

A:

Q: Luestic Given the circumference of the circle and the measure of the central angle ACB, find the…

A:

Q: Answer d, e and f

A:

Q: True or False. Zc Q

A: