Question

A trainer at the Popular Gym, was interested in comparing levels of physical fitness of the students attending a nearby community college and those attending a 4-year college in town. He selected a random sample of 320 students from the community college. The mean and standard deviation of their fitness scores were 95 and 10, respectively. He also selected a random sample of 320 students from the 4-year college. The mean and standard deviation of their fitness scores were 92 and 13 respectively. He then conducted a two-sided t-test that results in a t-value of 3.27 Which of the following is an appropriate conclusion from this study? Because the second group had a larger standard deviation, their mean fitness score is significantly highe. Because the sample means only differed by 3, the populations means are not significantly different. Because the second group had a larger standard deviation, the mean fitness score of the first group is significantly higher. Because the p-value is less than 0.05, the mean fitness scores from the two groups of students are significantly different. Because the p-value is greater than 0.05, the mean fitness scores from the two groups of students are significantly different.

Answer 1

uriven that This is a to tailed + test Heme 23 20 So, df 320320-2 df 638 | df 638

Hence, The P value hey( vatueo 3333+- As this is a sma p value, PLo o 5 then te d is resrede is sto the rean fine8 SCognes fon the tuo of stuokentr-a ane siami ficanu y ditferent