Questions 6 to 10 are related. based on a random sample of n=15 observations, we have obtained a sample mean of x(bar)=1050. the goal is to test: h(0): μ≤1000 and h(a): μ> 1000 assume that x is normally distributed with σ=150. what is the standard error (σ (x bar) )? rounded to two decimal places.

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

Which of the following is the graph of y= square root -x-3

Match the scale and the actual area to the area of the corresponding scale drawing. scale: 1 inch to 4 feet actual area: 128 square feet scale: 1 inch to 7 feet actual area: 147 square feet scale: 1 inch to 8 feet actual area: 256 square feet scale: 1 inch to 5 feet actual area: 225 square feet area of scale drawing scale and actual area scale drawing area: 3 square inches arrowright scale drawing area: 8 square inches arrowright scale drawing area: 4 square inches arrowright scale drawing area: 9 square inches arrowright