Suppose the annual employer 401(k) cost per participant is normally distributed with a standard deviation of $625, but the mean is unknown. (a) If 73.89% of such costs are greater than $1,700, what is the mean annual employer 401(k) cost per participant? (b) Suppose the mean annual employer 401(k) cost per participant is $2,258 and the standard deviation is $625. If such costs are normally distributed, 31.56% of the costs are greater than what value?

answer: y=0 if that is what u r looking for

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.

step-by-step explanation: