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svlad2 [7]
3 years ago
14

Lisa solved 40 math fact problems in 2 1/2 minutes.

Mathematics
2 answers:
vesna_86 [32]3 years ago
8 0

Answer:

Her unit rate remained the same

Step-by-step explanation:

80 is twice as much as 40. 5 minutes is twice as long as 2 1/2 minutes. Her unit rate never changed.

allochka39001 [22]3 years ago
8 0

Answer:

her unit rate remained the same

Step-by-step explanation:

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Answer:

Since the calculated value of z= 2.82  does not lie in the critical region  the null hypothesis is accepted and it is concluded that the sample data support the authors' conclusion that the proportion of the country's boys who listen to music at high volume is greater than this proportion for the country's girls.

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Step-by-step explanation:

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H0:  μboys − μgirls > 0

against the claim

Ha: μboys − μgirls ≤ 0

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z= 2.82

6) Conclusion

Since the calculated value of z= 2.82  does not lie in the critical region  the null hypothesis is accepted and it is concluded that the sample data support the authors' conclusion that the proportion of the country's boys who listen to music at high volume is greater than this proportion for the country's girls.

7)

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2 years ago
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3 years ago
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