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3 years ago

I need help with this iready question

Mathematics

1 answer:

Ad libitum [116K]3 years ago

7 0

Answer:

64%

Step-by-step explanation:

The percent that was plastic is the plastic over the total * 100 %

percent plastic = 16/25 *100%

= .64 *100%

64%

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Answer:

Test statistic = -2.25

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Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 450 gram

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Alpha, α = 0.05

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We use one-tailed t test to perform this hypothesis.

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$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

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Degree of freedom =

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We can calculate the p-value from the table as:

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Conclusion:

Since the p-value is smaller than the significance level we fail to accept the null hypothesis and reject it.

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