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Unformatted text preview: 1275 to round it up. Rounding down would cause there to not be enough to have that confidence level. (d) You could decrease the confidence level or you could increase E. (e) Chapter Exercises 8.64 (a)E = z*(phat/sqrt(n)) E = 1.645*sqrt[(86/773)(687/773)/773) = 0.01131 90% C.I. = ((86/773)0.01131 , (86/773)+0.01131) (b) pn= (86/773)773>5; nq=(687/773)773>5 (c) The very quick rule does not apply in this situation because p is .1113 which is very far below .5 (d) This sample may not be accurate as he being a popcorn connoisseur, he may be slightly better at making popcorn at the proper temperature....
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This note was uploaded on 02/21/2011 for the course RES 342 taught by Professor Carey during the Spring '08 term at University of Phoenix.
 Spring '08
 CAREY

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