題組內容

7. A researcher wants to test if the mean weight of a population of oranges is 150 grams. A random sample of \(n = 10\) oranges is collected, with the sample mean weight \(\overline{X} = 145\) grams and sample standard deviation \(s = 10\) grams.

(b) (10 分) Conduct the t-test at a significance level of α=0.05. Include the calculation of the test statistic and the decision rule.