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slava [35]
3 years ago
10

bracelet costs $8. Simone is also buying a necklace for her mother for $18. She believes that her total will be $98. Which expre

ssion could be used to estimate the reasonableness of Simone’s total? 8 × $8 + $10 8 × $8 + $18 10 × $8 + $20 10 × $10 + $10
Mathematics
2 answers:
Ulleksa [173]3 years ago
7 0
She wrong is 26
 i hope i helps

pishuonlain [190]3 years ago
7 0
For this case what we should do is write the expression step by step.
 "She believes that her total will be $ 98"
 To get to this we have:
 10 × $ 8 + $ 20
 Rewriting:
 10 × $ 8 + $ 20
 $ 80 + $ 20
 $ 100
 Rate approximately equal to $ 98 with an extra $ 2.
 Answer:
 An expression that could be used to estimate the reasonableness of Simone's total is:
 10 × $ 8 + $ 20
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Answer:

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Step-by-step explanation:

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".  

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On this case the Management try to determine if there is a difference in the average investment/quad between using electricity and using gas. So this needs to be on the alternative hypothesis. And the complement of the alternative hypothesis would be on the null hypothesis.  

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Alternative hypothesis: \mu_e \neq \mu_g

Or equivalently:

Null hypothesis :\mu_e - \mu_g = 0

Alternative hypothesis: \mu_e - \mu_g \neq 0

Other important thing is that on the alternative hypothesis we never can have the symbol equal.  

So on this case the best options is:

d. H0: (\mu_e - \mu_g) = 0 vs. Ha: (\mu_e - \mu_g) \neq 0

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