Question

A quality control specialist for a large computer store conducted a random sample of 150 laptops from its stock. She found 3 did not turn on and 5 required system updates to run properly. What is a reasonable probability model for the laptops the store has in stock?

Select all that apply.

3.3% of the laptops will require system updates.

92% of the laptops will function properly.

94.7% of the laptops will function properly.

96.6% of the laptops will function properly.

2% of the laptops will require system updates.

5.3% of the laptops will require system updates.

Help me please! I think its the first 3 but if someone could double check for me it would be appreciated !!!

Answer 1

150 - 5 = 145
145/150 = 96.7 100 -96.7 = 3.3 % need updates
150 - 8 = 142
142/150 = 94.7% worked properly