Question

The Hill of Tara in Ireland is a place of great archaeological importance. This region has been occupied by people for more than 4,000 years. Geomagnetic surveys detect subsurface anomalies in the earth's magnetic field. These surveys have led to many significant archaeological discoveries. After collecting data, the next step is to begin a statistical study. The following data measure magnetic susceptibility centimeter-gram-second × 106 on two of the main rids of the H of Tara Reference: Tara An Nchaeolo cal Survey by Conor Newnan, Royal Irish Academy, Dublin). Grid E:x variable 30.42 31.16 37.08 7.8536.71 12.29 14.14 24.50 31.90 15.25 30.79 12.29 11.55 31.16 Grid H: y variable 25.04 27.86 49.01 50.42 48.07 22.69 16.58 38.20 29.27 13.29 10.47 35.85 47.13 42.43 (a) Compute Σχ. Σχ, ΣΥ. Σy2. (Enter you r answers to 2 decimal places.) Sy Sy? (b) Use the results of part (a) to compute the sample mean , variance, and standard deviation for x and for y. (Enter your answers to 2 decimal places.) (c) Compute a 75% Chebyshev interval around the mean for x values and also for y values. (Enter your ahswers to 2 decimal places.) Lower Limit Upper Limit re the maanetic susceptibility on the two grids. Higher numbers indicate higher magnetic susceptibility. However, extreme values, high or low, ca

Answer 1