For #1 - 9: The Psychology Department faculty are wondering whether a free tutoring program will help boost grades in Introductory Psychology classes. We decide to try it out in Dr. Deuel's section. Using a Single Sample design with 28 participants they provide the program and then collect data on final grades. After the program, the sample mean was 88 and the sample standard deviation was 7. Conduct a t-test to determine if this is a significant difference from the population mean of 85 (the mean for ALL sections of Introductory Psychology from previous semesters). Set a= .05 and use a 2-tailed test. M - S estimated standard error=s, t = M or %3D Vn SM 8. Do you reject the null hypothesis or fail to reject the null hypothesis?

Q: 4. x² 2x 5. (125x²y¹) 6. (16a 1/4

A: (4)  K=x22x-5ax×ay=ax+y

Q: factors of 24 that add up to 10

A: factors of 24 that add up to 10

Q: 2/18 – 12/32 + 3V50

A: The solution is given below in the next step:

Q: Find L{1}ℒ{1}.

A:

Q: 3 3 x-5 1 322

A:

Q: Prove that X Pn dx %3D

A: Recurrence relation.  Partial fraction.

Q: 3 1/4 + 7 1/8

A:

Q: 5/14+1/6

A: 514+16=15+742

Q: 22n+1 3n+1 2.

A:

Q: expand (a-b)7

A: The solution is given in the next step.

Q: 2 2/3 X 5/8

A: Given that  22/3*5/8

Q: 10 X 12 X-3 +4=0

A: Here we have to find the value of x.

Q: 3/8+5/24

A: The given expression is 3/8 + 5/24.Simplify the given expression as follows.

Q: factors of 20 that add up to 9

A:

Q: 4/2-6/8

A:

Q: 6 2/5 ÷ 4

A: Given query is to solve the expression.

Q: 10. Find the sum of the coefficients of (2x– 3)°. c. -6560 d. -5120 а. -5660 b. -6780

A:

Q: 5 1/6 - 2 1/3

A: Given that 5 1/6 - 2 1/3

Q: 9 5/12 - 3 2/3 =

A: Case 1: Let the given number be in mixed fraction notation.

Q: 4/10 divided 1/2

A: Answer

Q: 10. 15gr, 20s

A: Given

Q: 57-24

A: Given that: 57-24

Q: 5 1/2-9 3/8

A: Simplify by first using the form to convert it into the form of fraction and then take the LCM and…

Q: 2.8x0.7

A: Multiplication: Multiplication is represented by the sign Cross("×"), Asterisk ("*") or Dot (".").…

Q: W 4. What is the value of the 4th term of the expansion (a + b)"? O a5 O 5a*b O 10a²63 10a b?

A:

Q: 12.2: Using Diagrams to Represent Division 2. Use long division to find 77.4 +5.

A: Given, 77.45  Using long division and diagram to represent , we have to find 77.45

Q: (25 dx +3x

A:

Q: 29 Using the combination formula expand (5+x)

A:

Q: 5 2/5+ n= 75/6

A: Given query is to find the value of n.

Q: 2/5 +7/12

A: Please see the answer below.

Q: (5/6)3

A: Cube means multiplying three times:   563=56×56×56=5×5×56×6×6=5363=125216

Q: 22 7/8 - 7=

A: Given,