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Mandarinka [93]
3 years ago
11

Sandy had 219 football cards. She bought 57 more at a garage sale. How many did she have then?

Mathematics
2 answers:
Blizzard [7]3 years ago
8 0

Answer:

276

Step-by-step explanation:

add 219 and 57 together

8_murik_8 [283]3 years ago
5 0
Therefore, Sandy has 276 football cards.
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An article describes an experiment to determine the effectiveness of mushroom compost in removing petroleum contaminants from so
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Solution :

Let p_1 and p_2  represents the proportions of the seeds which germinate among the seeds planted in the soil containing 3\% and 5\% mushroom compost by weight respectively.

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$z=\frac{(\hat p_1 - \hat p_2)}{\sqrt{\frac{\hat p_1 \times (1-\hat p_1)}{n_1}} + \frac{\hat p_2 \times (1-\hat p_2)}{n_2}}}

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Hence we conclude that the two population proportion are not significantly different.

Conclusion :

There is not sufficient evidence to conclude that the \text{proportion} of the seeds that \text{germinate differs} with the percent of the \text{mushroom compost} in the soil.

8 0
3 years ago
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