2. Two samples are randomly selected from two groups of students who have been taught using different teaching methods. An examination is administered and the results are shown below: Group A X-84 S1²=64 1₂-36 Group B X₂=86 S2²=81 n₂ = 45 Using x= 0.05, can we conclude that the two different teaching methods are equally effective?

Q: Find B - A. - 7 B = 2 6 A = 2 6 6 - 4 B-A =

A:

Q: 5x + 4y 5x + 4y = (Simplify ya

A: We have to solve

Q: Evaluate a + 5, if a = 3, b = -5, and c = 6

A:

Q: What is the product of -4 and 18

A: x*y = xy

Q: LeBron James scored p points last game and 39 points the game before that. How many points did…

A: We have to find

Q: Simplify

A: 4a2b4-a32b2

Q: Desmond plans to sell his homemade dog biscuits. He has baked 143,265 biscuits. He is planning to…

A: The divisibility rule for 5 is that a number is divisible by 5 if its unit digit is 0 or 5. In other…

Q: Jenna drew this math diagram to justify her belief that÷=; Explain what Jenna did wrong. (The answer…

A: Given: 47=49

Q: Evaluate 4a + b - 12 when a = - 1 and b = 2.5

A: See the solution below:

Q: Matthew had $5 saved. He earned $9 by completing chores. He spent $20 on a vldeo game. How much…

A: The answer is found in step-2

Q: Which option below follows the same pattern as those shown? A 000 DD Next 0 >

A: Given a series of patterns.To determine which of the given patterns is the same as the given ones.

Q: How do you know when to put 1 or 0 in the chart in the dummy variable approach

A: How it is known that  or  must be put in the chart in the dummy variable approach must be…