Answer:
a) The estimated standard deviation of the sampling distribution of the proportion is 0.023
b) the estimated standard deviation have been if he had surveyed only 100 customers is 0.046
Step-by-step explanation:
given information:
the number of sample, n = 400
sample proportion, p = 70% = 0.7
a) standard deviation of a sample proportion is
σ = 
= 
= 0.023
b) if n = 100, so
σ =
= 
= 0.046
Answer:
A
Step-by-step explanation:
because you need to reflect to match the shape
Answer:
B. VOLUNTARY RESPONSE
Step-by-step explanation:
Answer:
$ 728
Step-by-step explanation:
Amount of Money Cody has = $700
Simple Interest = 4%
As it is know that interest is always given on annually basis so
Amount of profit he have in one year = Money he have right now * interest
=700 * 4%
=
= $ 28
After one year he will have = total money at that time + Profit
= 700 + 28
= $ 728
