The owner of a chain of juice stores wants to compare the profits earned from two of his stores. The alternative hypothesis is, “There is a difference between the profits earned from the two stores.” What is the null hypothesis?

A.There is a significant difference between the profits from the two stores.
B.There is a difference between the profits from the two stores, and it is equal to the standard deviation.
CThere is no difference between the profits from the two stores.
D.The profit earned from both stores is equal to the standard deviation.
E.The profit earned from one store is gr

Question

The owner of a chain of juice stores wants to compare the profits earned from two of his stores. The alternative hypothesis is, “There is a difference between the profits earned from the two stores.” What is the null hypothesis?

A.There is a significant difference between the profits from the two stores. 
B.There is a difference between the profits from the two stores, and it is equal to the standard deviation.
CThere is no difference between the profits from the two stores.
D.The profit earned from both stores is equal to the standard deviation.
E.The profit earned from one store is gr

anonymous · Answer

Null hypothesis is usually that there is no difference.

anonymous · Answer

@amistre64

amistre64 · Answer

as a rule of thumb, i was told that the null has to carry an equals attribute ....

amistre64 · Answer

“There is a difference between the profits earned from the two stores.”
$$H_a:p_1\ne p_2$$
the null of that is to include the equal sign and reverse the inequality (if one exists)
$$H_o:p_1= p_2$$

amistre64 · Answer

spose we have a Ha of p1 < p2;  then null is the opposite of it:  Ho, p1 > p2,  and include the equal sign: Ho, p1 $\ge$ p2.

anonymous · Answer

so A?