A psychology department requires its seniors to take a standardized psychology test before they graduate. You want to know whether the scores of this year’s 112 seniors are less successful on this standardized test, on the average, from the national norm. The norms include μ = 21. The sample of seniors had a mean of 3.01, with a standard deviation of 85. Which statistical test is appropriate to analyze this data?

which of the following sets of data would produce the largest value for an independent-measures t statistic? the two sample means are 10 and 20 with variances of 20 and 25 the two sample means are 10 and 20 with variances of 120 and 125 the two sample means are 10 and 12 with sample variances of 20 and 25 the two sample means are 10 and 12 with variances of 120 and 125

Acompany produces packets of soap powder labeled “giant size 32 ounces.” the actual weight of soap powder in such a box has a normal distribution with a mean of 33 oz and a standard deviation of 0.7 oz. to avoid having dissatisfied customers, the company says a box of soap is considered underweight if it weighs less than 32 oz. to avoid losing money, it labels the top 5% (the heaviest 5%) overweight. how heavy does a box have to be for it to be labeled overweight?

Which equation can be solved to find x the measure of jk in the apex