For each of the following claims, fill in the blanks in the provided hypotheses with inequalities.

if your answer is "less than," type: <

if your answer is "greater than," type: >

if your answer is "less than or equal to," type: < =

if your answer is "greater than or equal to," type: > =

if your answer is "equal to," type: =

if your answer is "not equal to," type: /=

(a) theory to be tested: the average number of children per household in the united states is less than 3.

h0: ? 3 and ha: ? 3

(b) theory to be tested: the average weight of tamu students is greater than 110 pounds.

h0: ? and ha: ?

(c) theory to be tested: the average diameter of saguaro cacti is not 2.1 feet.

h0: ? 2.1 and ha: ? 2.1

(d) theory to be tested: in belarus (former member of the soviet union, located near chernobyl), the average life span is under 70 years.

h0: ? 70 and ha: ? 70