A direct mail appeal for contributions from a university s alumni and supporters is considered to be too costly if less than 16 of the alumni and supporters provide monetary contributions To determine if a direct mail appeal is cost effective the fundraising director sends the direct mail brochures to a simple random sample of 348 people on the alumni and supporters mailing lists They receive monetary contributions from 43 people Does this evidence demonstrate that the direct mail campaign is not cost effective Use a 0 05 level of significance Step 3 of 3 Draw a conclusion and interpret the decision Answer Tables Keypad Keyboard Shortcuts O We reject the null hypothesis and conclude that there is insufficient evidence at a 0 05 level of significance that the direct mail campaign is not cost effective O We fail to reject the null hypothesis and conclude that there is insufficient evidence at a 0 05 level of significance that the direct mail campaign is not cost effective O We reject the null hypothesis and conclude that there is sufficient evidence at a 0 05 level of significance that the direct mail campaign is not cost effective We fail to reject the null hypothesis and conclude that there is sufficient evidence at a 0 05 level of significance that the direct mail campaign is not cost effective