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babymother [125]
4 years ago
8

Express the confidence interval 0.319 < p < 0.488 in the form of p ± E.

Mathematics
1 answer:
KengaRu [80]4 years ago
8 0

Answer:

0.4035+/-0.0845

Step-by-step explanation:

The fundamental step would be to determine the values of p and E which i believe is the margin of error in this case. Consider the following two equations;

p-E=0.319\\p+E=0.488

We simply add the two equations and solve for p;

2p=0.807\\p=0.4035

We then substitute this value of p in either equation and solve for E;

0.4035-E=0.319\\E=0.0845

Since we have both p and E, the confidence interval can thus be written as;

0.4035+/-0.0845

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