Question

What is Ha here?

Return to question An article in Fortune magazine reported on the rapid rise of fees and expenses charged by mutual funds. Assuming that stock fund expenses and municipal bond fund expenses are each approximately normally distributed, suppose a random sample of 12 stock funds gives a mean annual expense of 1.51 percent with a standard deviation of 0.51 percent, and an independent random sample of 12 municipal bond funds gives a mean annual expense of 0.71 percent with a standard deviation of 0.17 percent. Let uy be the mean annual expense for stock funds, and let us be the mean annual expense for municipal bond funds. Do parts a, b, and c by using the equal variances procedure. 1.66 points (a) Set up the null and alternative hypotheses needed to attempt to establish that the mean annual expense for stock funds is larger than the mean annual expense for municipal bond funds. Test these hypotheses at the 0.05 level of significance. (Round your so? answer to 4 decimal places and t-value to 2 decimal places.) UUTUULLUTUULUULUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL HO: u1 – u2 s s2p = Reject Answer is complete but not entirely correct. o versus Ha: 0.000 ® 0 5.16 HO with a = 0.05 0.1445

Answer 1

This is the right tailed test .

The null and alternative hypothesis is

H₀ : $\mu$ ₁ - $\mu$ ₂$\leq$ 0

H_a : $\mu$ ₁ - $\mu$ ₂ > 0