A local cell phone store just received a shipment of 340 cell phone chargers. The manager wants to estimate the number of defective cell phone chargers in the shipment. Rather than checking every cell phone charger, the manager plans to take a simple random sample of size 68 in order to estimate the proportion of defective cell phone chargers in the shipment. If the sample proportion of defective cell phone chargers,

b

step-by-step explanation:

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.

answer: #1 ads up by 8 and i don't know #2