Page > of 5 1.) Why can you not round your value of n to the nearest whole number when solving for the sample size? 2.) Determine the error each student made in trying to calculate the necessary sample size for these questions. Then fix their errors by calculating the correct sample size. a.) You want to estimate the mean salary of students 3 months after graduating within $1500 with 90% condence. A preliminary sample of students had ; = $30,000 with s = $6,000 . How many students should be included in your study? i.) John does the following: 6000 1500:1223 ( J2 ) = 5006:7680 => 5:5.12 => n=26.2144~27 ii.) Gretchen does the following: 1500=1.645[6J_000] => 1500Jr7=9s70 => 5:658 2 n=43.2964~43 n iii.)Yu Yan does the following: 30,0001.645[6000] = 1500 2 J; 9870 J; =28,500 => 0.346=JZ 2 n =0.120 zl iv.) Correct solution: 0 ZOOM + Page of5 b.) You want to estimate the proportion of students who nd a job related their major within 3 months of graduating. Your estimate should be within 5% with a 99% level of condence. How many graduates should be included in your study? i.) Rachel does the following: .05=2.575 w :5 .05J'=.2562 2 6:5.124 2 n=26.2~27 71 ii.) Wesley does the following: (.5)(;5) n 5:2575 3 SJr7=1.288 2 5:258 => n=.066=1 iii.)Tafari does the following: (-5)(-5) n .05 = 2.575 :> .05/Z =1.288 3 J? = 25.76 :> n = 5.075 ~6 iv.) Correct Solution: 3.) When presented with a scenario, which hypothesis is typically easiest to start with? O ZOOM +