Astudy of one thousand teens found that the number of hours they spend on social networking sites each week is normally distributed with a mean of 15 hours. the population standard deviation is 2 hours. what is the 95% confidence interval for the mean? . a.14.88−15 hours . b.14.88−15.12 hours . c. 15−15.12 hours . d.14.76−14.24 hours

The 95% confidence interval for the mean is 14.88−15.12 hours.

The correct answer between all the choices given is the second choice or letter B. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "

answer: i don't understand it

step-by-step explanation: sorry