One measure of the risk of a mutual fund is the standard deviation of its rate of return. Suppose a mutual fund qualifies as having moderate risk if the standard deviation of its monthly rate of return is less than 4%. A mutual-fund manager claims that his fund has moderate risk. A mutual-fund rating agency does not believe this claim and randomly selects 25 months and determines the rate of return for the fund. The standard deviation of the rate of return is computed to be 3.01%. Is there sufficient evidence to conclude that the fund has moderate risk at the \alphaα=0.05 level of significance? A normal probability plot indicates that the monthly rates of return are normally distributed.

Students at a high school were asked about their favorite outdoor activity. the results are shown in the two-way frequency table below. fishing camping canoeing skiing total boys 36 44 13 25 118 girls 34 37 22 20 113 total 70 81 35 45 231 select all the statements that are true based on the given table. more girls chose camping as their favorite outdoor activity than boys. more girls chose canoeing as their favorite outdoor activity than those who chose skiing. more boys chose skiing as their favorite outdoor activity than girls. there were more boys surveyed than girls. twice as many students chose canoeing as their favorite outdoor activity than those who chose fishing. more students chose camping as their favorite outdoor activity than the combined number of students who chose canoeing or skiing.