The аrticle “Cоncrete Pressure оn Fоrmwork” (Mаg. of Concrete Res., 2009: 407–417) gаve the following observations on maximum concrete pressure (kN/m2 ): 33.2 41.8 37.3 40.2 36.7 39.1 36.2 41.8 36.0 35.2 36.7 38.9 35.8 35.2 40.1 Use the information presented to construct a 98% interval estimate for the true deviation in the maximum concrete pressure. If we assume the distribution of the maximum concrete pressure is normal, would it be reasonable to claim that the standard deviation in the maximum concrete pressure is less than 4 kN/m2?