Using the same question as in question 1 (restated below), answer the following question: A consumer psychologist asked to test a claim by a swimming school that its instructors could teach the average seven-year-old to swim across an Olympic-sized pool in less than 2 minutes. The psychologist arranged for eight randomly selected seven-year-old children to take lessons at the school and recorded how long it took each child to swim across a pool at the end of the lessons. The times (in seconds) were 60, 65 100, 80, 70, 90, 100, and 100, which averages to 83.125 . The known population's mean was 120 seconds. If you ran a statistical test on this data and came up with the following results, would you say that the lessons resulted in a significant change in time taken to swim across the pool? Cutoff t score needed = +/-1.895 t = 2.88 Is the t score given more extreme than the cutoff score in the desired direction? Select one: a. No, it is not significant. b. Yes, it is significant.
Using the same question as in question 1 (restated below), answer the following question:
A consumer psychologist asked to test a claim by a swimming school that its instructors could teach the average seven-year-old to swim across an Olympic-sized pool in less than 2 minutes. The psychologist arranged for eight randomly selected seven-year-old children to take lessons at the school and recorded how long it took each child to swim across a pool at the end of the lessons. The times (in seconds) were 60, 65 100, 80, 70, 90, 100, and 100, which averages to 83.125 . The known population's mean was 120 seconds. If you ran a statistical test on this data and came up with the following results, would you say that the lessons resulted in a significant change in time taken to swim across the pool?
Cutoff t score needed = +/-1.895
t = 2.88
Is the t score given more extreme than the cutoff score in the desired direction?
No, it is not significant.
Yes, it is significant.
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