3 years ago

Please help me please will give brainliest

2 answers:

adoni [48]3 years ago

6 0

Answer:

Step-by-step explanation:

Ksivusya [100]3 years ago

4 0

Answer:

A. less than three batteries were used in five hours.

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Digiron [165]

You can find additive inverse to find integers and their opposites closed under addition.

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4 years ago

Mademuasel [1]

Answer: $H_0:\mu=40$

$H_0:\neq40$

Step-by-step explanation:

A null hypothesis is a hypothesis where a researcher generally try to disprove, it says that there is no statistically significant relationship between the two variables .
An alternative hypothesis says that there is a statistical significance between two variables.

Claim 1. : Mean age of online dating service users is 40 years.

i.e. $\mu=40$ , since it has equals sign so we take this as null hypothesis.