A research firm has been hired to determine the validity of claims of age discrimination made against a large multi-national corporation. They decide that the best way to do this is to randomly select employees and find their age. They randomly sample 170 employees and calculate a sample mean age of 39.9 years and a sample standard deviation 6.9 years. Which confidence interval would they use

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 )

Idon’t know but you’ll figure it out