Calculate the upper and lower limit for a 95% confidence interval about the mean.

a family wants to reduce its expenditures for personal items like gifts, newspapers, magazines and so forth. a sample of 49 months of receipts yields a mean of $220.00 with a standard deviation of $30.00. they decide to calculate a 95% confidence interval about this mean.

Ineed asap. 35 points. in order for two polygons to be similar, two conditions must be met. first, all pairs of corresponding sides must be in proportion. second, all corresponding angles must be congruent. prove that angle congruence is not enough, by itself, to establish that two polygons are similar. do this by describing or drawing two polygons that are not similar but whose corresponding angles are all congruent.