A philanthropic organisation sent free mailing labels and greeting cards to a random sample of 100 comma 000100,000 potential donors on their mailing list and received 47034703 donations. (a) Give a 9999% confidence interval for the true proportion of those from their entire mailing list who may donate. (b) A staff member thinks that the true rate is 4.74.7%. Given the confidence interval you found, do you find that rate plausible?

Christine went shopping and bought each of her six six nephews a? gift, either a video costing? $14.95 or a cd costing? $16.88. she spent ? $ 97.42 97.42 on the gifts. how many videos and how many cds did she? buy?

Assume that 1400 births are randomly selected and 1378 of the births are girls. use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high. choose the correct answer below. a. the number of girls is neither significantly low nor significantly high. b. the number of girls is significantly high. c. the number of girls is significantly low. d. it is impossible to make a judgment with the given information.

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2