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Sliva [168]
3 years ago
13

How can you tell if a number is divisible by 4?

Mathematics
1 answer:
Grace [21]3 years ago
5 0
<span>D. The last two digits of the number are divisible by 4. </span>
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The principal of a large high school wants to know if students spend more than 1 hour doing homework per night, on average. To i
MrRissso [65]

Answer:

If we define the random variable X ="time spend by the students doign homework"

And we want to tes t is students spend more than 1 hour doing homework per night, on average (alternative hypothesis), so then the system of hypothesis for this case are:

Null hypothesis: \mu \leq 1

Alternative hypothesis: \mu >1

And they wnat to use a sample size of n = 100 and a significance level of 0.05

Step-by-step explanation:

Previous concepts

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".

Solution to the problem

If we define the random variable X ="time spend by the students doign homework"

And we want to tes t is students spend more than 1 hour doing homework per night, on average (alternative hypothesis), so then the system of hypothesis for this case are:

Null hypothesis: \mu \leq 1

Alternative hypothesis: \mu >1

And they wnat to use a sample size of n = 100 and a significance level of 0.05

7 0
3 years ago
Your answer must be simplified. x+5≤−4
PilotLPTM [1.2K]

Answer:

x≤−9

Step-by-step explanation:

x+5≤−4

-4-5=-9

you subtract 5 form each side

therefore x≤−9

hope this helps

4 0
3 years ago
Read 2 more answers
I need the answer please.
Anestetic [448]

2 1/4 = 9/4

(9/4)(8/5) = (9/1)(2/5) = 18/5 = 3 3/5 cups

5 0
3 years ago
What is 15 minutes before 4:35? what time would that be? pls answer today!!!
Andrews [41]

Answer:

4:20

Step-by-step explanation:

35-15= 20

7 0
3 years ago
Read 2 more answers
Factor 8a^2+8ab+8ac+3a+3b+3c
nalin [4]

Answer:

(8a + 3)(a + b + c)

Step-by-step explanation:

8a^2 + 8ab + 8ac + 3a + 3b + 3c =

= 8a(a + b + c) + 3(a + b + c)

= (8a + 3)(a + b + c)

5 0
3 years ago
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