You surveyed 350 students, out of which 182 were unsure.
The calculation gives: 182/350 = 0.52, indicating that 52% of the students were uncertain.
Now, apply this percentage to the national survey total:
50,000 x 0.52 = 26,000
The final result is 26,000 students who wouldn't know.
2000 + 1500g ≤ 15000
1500g ≤ 15000 - 2000
1500g ≤ 13000
g ≤ 13000/1500
g ≤ 8 2/3
Thus, the crane is capable of safely lifting no more than 8 2/3 cubic meters of gravel.
Answer:
y hat = 2114.20 + 18.96x
Step-by-step explanation:
Given the least squares regression model equation:
y hat = -959.00 + 8.60x
weld diameter x; shear strength y (in pounds)
1 lb = 0.4536 kg
To convert shear strength y to kilograms:
y is multiplied by 0.4536
(y hat × 0.4536) = -959.00 + 8.60x
Divide both sides by 0.4536
(y hat × 0.4536) / 0.4536= (-959.00 + 8.60x) / 0.4536
y hat = 2114.1975 + 18.959435x
y hat = 2114.20 + 18.96x
