One sample of n= 10 scores has a mean of 8 and a second sample of n= 5 scores has a mean of 2. If the two samples are combined, what is the mean for the combined sample?

Which of the following lines does not intersect the line y=-2x+3 ? a) y=2x b) y=2x-3 c) y=2x+3 d) y=-2x-3

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

Formulate the indicated conclusion in nontechnical terms. be sure to address the original claim. the foundation chair for a hospital claims that the mean number of filled overnight beds is over 523, and she is therefore justified starting a funding campaign to add a wing to the hospital. assuming that a hypothesis test has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms.