Answer:
It is a working hypothesis making a claim about the population parameter in question.
Explanation:
In statistics science, the null hypothesis is all the opposite of which the investigator desires to probe and it is represented with H0. Normally, the null hypothesis is considered true, unless there is strong evidence to prove that it is false. You will also need to formulate an alternative hypothesis, that will show what you want to probe, and will be represented with H1.
For instance, let's say that you want to make a research about the average time per day people spend using computers. You will interview 1000 people, in a small city. Before you start the interviews, you want to prove that people spend more than 5 hours per day using their computers (H1), or if it's all the opposite, and they spend less than 5 hours per day (H0).
I’m pretty sure the answer is: a (three)
<h3>Change this verb from the present tense to the preterite tense.</h3>
Question 11: Tú estudias.
Answer 11: Tú estudiaste.
You studied.
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Question 12: Raúl estudia.
Answer 12: Raúl estudió.
Raul estudied.
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Question 13: Nosotros pagamos.
Answer 13: Nosotros pagamos.
We paid.
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<h3>Fill the blank with the preterite tense of the verb in parentheses.</h3>
Question 14: Usted ______________ a la tienda por teléfono. (llamar)
Answer 14: Usted llamó a la tienda por teléfono.
You called the store by phone.
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Question 15: Lolita ____________con Pablo en la fiesta anoche. (hablar)
Answer 15: Lolita habló con Pablo en la fiesta anoche.
Lolita spoke with Pablo at the party last night.
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The fourth option is correct.
