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guajiro [1.7K]
3 years ago
15

Jim and Jabu join a gym. Jim's gym take R150 deposit,and he pays R120 monthly. Jabu's gym takes no deposit, but his monthly paym

ent is R150. They compare their total payments after four months, after five months and after six months.
3.1 Reasoning
3.2 Number sentence​
Mathematics
1 answer:
Svetlanka [38]3 years ago
7 0

Answer:

What should I answer?

Step-by-step explanation:

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what do you need help with?

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<span>associative property of addition and answer is 
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A researcher is 95% confident that the interval from 5.2 hours to 7.8 hours captures u = the true mean amount of time
igor_vitrenko [27]
<h3>Answer: Choice B</h3>

No, this is not a plausible value for the population mean, because 5 is not within the 95% confidence interval.

====================================================

Explanation:

The greek letter mu is the population mean. It has the symbol \mu which looks like the letter 'u' but with a tail at the front or left side.

The question is asking if mu = 5 is plausible if the researcher found the 95% confidence interval to be 5.2 < mu < 7.8

We see that 5 is <u>not</u> in that interval. It's a bit to the left of 5.2

Since mu = 5 is not in the interval, it's not a plausible value for the population mean.

Have we ruled it out with 100% confidence? No. Such a thing is not possible. There's always room for (slight) error. The researcher would need to do a census to be fully confident; however, such practices are very time consuming and expensive. This is the main reason why statistics is important to try to estimate the population with a sample.

8 0
2 years ago
What is the slope of a line that is parallel to the line represented by the equation : y = 5x - 3?
Lerok [7]

Answer:

5

Step-by-step explanation:

This line equation is in  y = mx + b form    m will be the slope

 m = 5     parallel line will have same slope  = 5  

5 0
2 years ago
Which of the following ordered pairs are a solution to the equation y = 6x -3
OLEGan [10]

(0,-3)  (-4,-27)  (1,3) are the correct points

(4,61) <u>doesn't</u> work

4 0
2 years ago
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