Out of a sample of 150 people who walked into a fast food restaurant 135 said they prefer ketchup to mustard on their hamburgers. With 89% confidence, what is the confidence interval for the population mean of customers that prefer ketchup to mustard on their hamburgers? CI= (86. 09%, 93. 91%)
CI=(85. 20%, 94. 80%)
CI= (82. 61%, 95. 87%)
Cl = (83. 69%,96. 31)

Sean is getting frustrated by his math homework. rebecca sean with his math homework. in a neutral tone, rebecca explains to sean how to solve the equation he was having difficulty with. sean is impressed by rebecca’s mathematical mastery. later, he describes her as warm and friendly. based on the information above and sean’s question, what might a psychologist conclude about his social perception? a. sean’s opinion about rebecca’s friendliness was part of a conscious desire to overlook her cold behavior. b. sean’s opinion about rebecca’s friendliness was influenced by his own positive mood and feelings. c. sean’s opinion about rebecca’s friendliness was based on interactions with other math students. d. sean’s opinion about rebecca’s friendliness was affected by his positive assessment of her math skills.