Question

Use the following table to answer each question.

Answer 1

Answer:

• $47.33
• $43
• $50.25

Step-by-step explanation:

Using table calculating the mean for each case

1. Entire year, sample size 12

• x = 1/12* ∑ xi, i= 1 to 12
• x = 1/12(40+42+40+38+48+50+58+62+56+46+44+44)
• x = 1/12*568 = $47.33

2. First six months, sample size 6

• x = 1/6*∑ xi, i= 1 to 6
• x = 1/6(40+42+40+38+48+50)
• x = 1/6*258 = $43

3. April through November, sample size 8

• x = 1/8*∑ xi, i= 4 to 11
• x = 1/8(38+48+50+58+62+56+46+44)
• x = 1/8*402 = $50.25