Which of the following is an improper form of the null and alternative hypotheses?

a. HO: ? ? ?o and HA ? < ?o
b. HO: ? < ?o and HA: ? ?o
c. HO: ? ? ?o and HA: ? > ?o
d. HO: ?= ?o and HA: ? = ?o


Ans: b. HO: ? < ?o and HA: ? ?o

Mathematics

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