Answer:
Step-by-step explanation:
( 0.5 )³ ×
= ( 0.5 × 2 )³ × 2 = 1³ × 2 = 2
Answer:
a) 217
b) 1351
c) 5403
Step-by-step explanation:
Given that:
confidence interval (c) = 0.95

The Z score of
is from the z table is given as:

Range = $45000 - $30000 = $15000
The standard deviation (σ) is given as:

Sample size (n) is given as:

a) E = $500
≈ 217
b)
≈ 1351
c)
≈ 5403
Answer:
Step-by-step explanation: ifk