Question

When choosing an item from a group, researchers have shown that an important factor influencing choice is the item's location. This occurs in varied situations such as shelf positions when shopping, filling out a questionnaire, and even choosing a preferred candidate during a presidential debateIn this experiment, five identical pairs of white socks were displayed by attaching them vertically to a blue background that was then mounted on an easel for viewingOne hundred participants from the University of Chester were used as subjects and asked to choose their preferred pairs of socksIn situations of this type, subjects often exhibit the "center stage effect," which is a tendency to choose the item in the center. this experiment, 34 subjects chose the pair of socks in the center. Are these data evidence of the "center stage effect"? STATE: Are the students choosing pairs of socks randomly? If the students were choosing socks at random, what would be the chance, of a pair being selected? (Enter your answer rounded to one decimal place.) p 0

Answer 1

a) We have evidence of the " center stage effect" pair number 3 was selected 34 times almost double the probability of random process

b) probability of ocurrency in random case is 20 %

Explanation:

To answer this question we first look at the probability of chossing a pair in case of random selection

P = successful event / total outcomes

P₁ = 1/5

P₁ = 0,2 or P₁ = 20 %

Then if the central pair was selected 34 times from 100 participants ( almost the double ) we have evidence of the center stage effect

P₂ = 34/100 or P₂ = 0,34