15 NEXT TWO QUESTIGNS ARE RELATED $5 12 A researcher reports survey results by stating that the margin of error for the 95% middle 1? interval of the sample means is 42.84. The population variance is assumed to he o3 = $8 21495. The sample size us ed in this survey is l9 a 5? SCI 1:: 53 31 c 49 32 d 45 S3 34 13 In the previous question the margin of error for the middle interval that captures 99% of 35 sample means is _' SE a 32.25 S? b 35.95 38 c 34.24- 59 d 32.51