1. Answer: given: an average of 28 pounds
a.
Find z values corresponding to 27 and 31:
z=%2827-28%29%2F2=-1%2F2=-0.5
z=%2831-28%29%2F2=3%2F2=1.5
Find the area between z+=+-0.5 and z=+1.5
Table E gives us an area of 0.9332-0.30=0.6247=> The probability is 62.47%
b.
Find z values corresponding to 30.2
z=%2830.2-28%29%2F2=2.2%2F2=1.1 Find the area to the right of z+=1.1
it gives you an area of 0.1357=> The probability is 13.57%
Answer:
y = - 750
Step-by-step explanation:
Given
y = x³y² ← substitute x = - 5, y = - 3 into the expression
= × (- 5)³ × (- 3)²
= × - 125 × 9 ( cancel the 3 and 9 )
= 2 × - 125 × 3
= - 750
30:42 is represented as 30/42
The lowest form for that is 5/7. Hope that helped. Good luck
She would need 29.5 questions which would be 70% so 29.5-18 is your answer