Question

Out of a sample of 953 Americans,486 said the average American is not very considerate of others when talking on a cell phone. (Data simulated from carey & carter, 2006) Do these data provide sufficient evidence at the .05 level of significance to conclude that the majority of Americans think the average American is not very considerate of others when talking on a cell phone?

(Enter the number only in the box below with 3 decimal places)

Answer 1

From the value we have in the excel document we have that the p value is given as 0.2691

How to get the p value

The p-value, or probability value, is a measure used in statistical hypothesis testing. It represents the probability of obtaining results as extreme as, or more extreme than, the observed results, under the assumption that the null hypothesis is true.

p : Proportion of successes

H0 : p = 0.5

HA : p > 0.5

sample proportion = 0.509968

From the excel document the p value is given as 0.2691