A researcher has been observing the local Republican Party in a large city and has compiled some information about a random sample of 40 party regulars. Data with regard to the number of years in the party for 40 party regulars are presented below. Descriptive results produced by SPSS are also presented below. 25 28 12 26 5 29 50 10 25 4 8 3 1 17 8 20 17 32 14 40 00 00 9 8 15 4 15 20 25 15 8 7 2=76 30 25 11 14 15 25 21 1 2 Statistics number of years in the party N Valid 40 Missing D Mean 15.73 Std. Error of Mean 1.753 Median 14.50 Mode 25 Sld. Devialion 11.087 Variance Skewness Std. Error of Skewness Kurtosis Std. Error of Kurtosis Percentiles 00 GZ Find the 95% confidence intervals for the population mean: 12.29 to 19.17 122.922 976 374 1.040 733 12.19 to 19.27 12.19 to 19.37