Aset of 10 determinations, by a method devised by the chemist karl fischer, of the percentage of water in a methanol solution yielded the following data. 50, .55, .53, .56, .54, .57, .52, .60, .55, .58

assuming normality, use these data to give a 95 percent confidence interval for the actual percentage.

8doors on the second floor

than do 23.50 times 18 and then divide your answer by 100 than you will get x.

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )