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. М-и t = estimated standard error=sy =F = or n SM 7. What is your teritical?

Q: 7+3.5-11

A: Let's Solve,

Q: 2 3 3 4 6 8

A: The mean is computed below.   Aptitude score(x) Frequency(f) x*f 0 4 0 1 2 2 2 3 6 3 0 0…

Q: 1+3+5+7...+1003

A: Sum of n odd numbers, where the last term of the series is (2n – 1), is, Sn = 1 + 3 + 5 + …. + (2n –…

Q: 6.5+ 4

A: To simplify given

Q: 7 11

A:

Q: 4root2*4root2

A:

Q: 7 2 3k+1= [A] k = 2

A: Consider the equation ∑n=273k+1=A We have to find the value of A Expand the summation of left hand…

Q: 3/8+5/24

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

Q: Expand (a −b)4

A:

Q: 4. Fill in the following contingency table with the number of observations that fall into each com-…

A: x1 = number of colored oranges from Skittles brand = 77 x2 = number of colored oranges from M &…

Q: (n + 4)3 =

A: Given query is to expand (n+4)3

Q: 10| 5 10 10 -5 -5

A:

Q: 18(9+7)+3

A: 18(9+7)+3

Q: expand (x+y)6

A:

Q: elow is an incomplete probability model showing the likelihood of selecting a marble from a way.…

A: Second option is correct 3/10

Q: 3(m – 5) + m

A: 3(m-5)+m=0 3m-15+m=0 add both side 15 we get 2m=15

Q: 6 1/6 + 6

A: