Using 6.84 as a planning value for the population standard deviation.

1. What sample size is required to obtain a margin of error of 1.5 and a level of confidence of 0.95? ____________

1. What sample size is required to obtain a margin of error of 2 and a level of confidence of 0.90? ____________

(a)32

(b)40

(c)46

(d)54

(e)60

(f)68

(g)72

(h)80

(i)88

(j)96

Please solve using R. Thanks