The mean Verbal SAT score for the population of first students at Radford is 520. The standard deviation of scores in this population is 95. An investigator believes that the mean Verbal SAT of first year psychology majors is significantly greater than the mean score of the population. The mean of a sample of 36 first year psychology majors is 548. Test the investigator's prediction using an alpha level of .05. Z = 1.768; Critical value = -1.645; Fail to Reject null hypothesis. Z = 1.768; Critical value = 1.645; Reject null hypothesis t = 1.768; Critical value = 1.689; Reject null hypothesis t = -1.768; Critical value = -1.689; Fail to Reject null hypothesis

The mean Verbal SAT score for the population of first students at Radf

1.	The mean Verbal SAT score for the population of first students at Radford is 520. The standard deviation of scores in this population is 95. An investigator believes that the mean Verbal SAT of first year psychology majors is significantly greater than the mean score of the population. The mean of a sample of 36 first year psychology majors is 548. Test the investigator's prediction using an alpha level of .05. Z = 1.768; Critical value = -1.645; Fail to Reject null hypothesis. Z = 1.768; Critical value = 1.645; Reject null hypothesis t = 1.768; Critical value = 1.689; Reject null hypothesis t = -1.768; Critical value = -1.689; Fail to Reject null hypothesis
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