The following table summaries the time, t minutes to the nearest minutes, recorded
i for a group of student to complete an exam.
time it) | 11-20 | 21-25 26-30/31-35 | 36-45 | 46-60l
62
13
10
number | 62 | 88 | 1613
number
101
88
of students!
(p
eft2 = 134281.25
estimate the mean and standard
deviation of these
data

For a science project, a high school research team conducted a survey of local air temperatures. based on the results of the survey, the found that the average temperatures were around 10 degrees higher than expected. this result was wrong. the trouble with the survey was that most of the locations were exposed to direct sunlight and located over asphalt or sand, which resulted in higher temperatures than normal. this is a classic example of an error in which phase of inferential statistics?