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PSYCHO15rus [73]
3 years ago
14

Hi How are you? Answer this question for some points + a thanks :) 1218+ 1516=?

Mathematics
2 answers:
melisa1 [442]3 years ago
6 0
1218 + 1516 is equal to 2734.
Andrew [12]3 years ago
5 0
1218+1516=2734 that’s the answer to this question
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laila [671]

Answer:

A

Step-by-step explanation:

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3 years ago
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A study is performed in San Antonio to determine whether the average weekly grocery bill per five-person family in the town is s
bogdanovich [222]

Answer:

No, the sample evidence is not statistically significant (P-value = 0.125).

To reject the null hypothesis, the P-value has to be smaller than the significance level, so the significance level to reject the null hypothesis has to be 0.125 or higher.

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim is that the average weekly grocery bill per five-person family in San Antonio is significantly different from the national average.

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t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{133.474-131}{1.583}=\dfrac{2.474}{1.583}=1.563

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df=n-1=50-1=49

This test is a two-tailed test, with 49 degrees of freedom and t=1.563, so the P-value for this test is calculated as (using a t-table):

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The null hypothesis failed to be rejected.

There is not enough evidence to support the claim that the average weekly grocery bill per five-person family in San Antonio is significantly different from the national average.

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2 years ago
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