(08.01)sam wants to know how many families in his neighborhood plan to attend the neighborhood cookout. he puts all 100 of the neighborhood addresses in a hat and draws a random sample of 25 addresses. he then asks those families if they plan to attend the cookout. he finds that 15% of the families plan to attend the cookout. he claims that 15% of the neighborhood families would be expected to attend the cookout. is this a valid inference? yes, this is a valid inference because he took a random sample of the neighborhood yes, this is a valid inference because the 25 families speak for the whole neighborhood no, this is not a valid inference because he asked only 25 families no, this is not a valid inference because he did not take a random sample of the neighborhood question 2(multiple choice worth 5 points) (08.01)maggie wants to know how many students in her school enjoy watching sports on tv. she asks all 25 students in her m

Determine if the following statement is true or false. the normal curve is symmetric about its​ mean, mu. choose the best answer below. a. the statement is false. the normal curve is not symmetric about its​ mean, because the mean is the balancing point of the graph of the distribution. the median is the point where​ 50% of the area under the distribution is to the left and​ 50% to the right.​ therefore, the normal curve could only be symmetric about its​ median, not about its mean. b. the statement is true. the normal curve is a symmetric distribution with one​ peak, which means the​ mean, median, and mode are all equal.​ therefore, the normal curve is symmetric about the​ mean, mu. c. the statement is false. the mean is the balancing point for the graph of a​ distribution, and​ therefore, it is impossible for any distribution to be symmetric about the mean. d. the statement is true. the mean is the balancing point for the graph of a​ distribution, and​ therefore, all distributions are symmetric about the mean.