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werson9339
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Homework Statement
Person A claims that the porportion of household installed with solar heater is 0.15. A random sample of 250 household iataken.
Assuming the claim of person A is true, finding the probability that tge sample proportion is within 0.05 of the population proportion.
Homework Equations
The Attempt at a Solution
the ans given is P (|pˆ-p| ) < 0.05 ,
i do it in this way ... my reason is to find the z value using confidence interval method , since confience interval is defined as how many percent are you sure that the sample mean lies in the population mean interval
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