Results of 90% confidence intervals are consistent with results of two-sided tests with which significance level? Explain the connection. A 90% confidence interval is consistent with a two-sided test with significance level alphaequals nothing because if a two-sided test with this significance level rejects the null hypothesis, then the confidence interval ▼ does not contain contains the value in the null hypothesis.

Mrs. julien’s and mrs. castillejo’s classes are selling cookie dough for a school fundraiser. customers can buy packages of macadamia nut chip cookie dough and packages of triple chocolate cookie dough. mrs. julien’s class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $221.25. mrs. castillejo’s class sold 5 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $191.25. (a) write the system of equations that model the problem. be sure to explain which equation represents which situation. (b) find the cost of each type of cookie. show your work. (c) explain which method you used to solve the system and why you chose that method.