Question

question 15
in anova, the null hypothesis is:
a $h_0: \sigma_1 = \sigma_2 = \sigma_3$
b $h_0: \sigma_1 \
eq \sigma_2 \
eq \sigma_3$
c $h_0: \mu_1\
eq\mu_2\
eq\mu_3$
d $h_0: \mu_1 = \mu_2 = \mu_3$

Explanation:

In ANOVA (Analysis of Variance), the null hypothesis assumes that the population means of all groups are equal. Here, $\mu_1$, $\mu_2$, and $\mu_3$ represent the population means of different groups.

Answer:

D. $H_0: \mu_1=\mu_2 = \mu_3$