PLEASE HELP! I don't know how to find the sample mean in this example because there is no data set. A random sample of 45 Hollywood movies made since 2010 is 130.5 minutes with a sample standard deviation of 13.8 minutes. Construct a 95% confidence interval for the true population mean length of all Hollywood movies since 2010.

what is the sample mean?

2/1 or just 2. sorry if i get this wrong

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 )