# finding the probability that tge sample proportion is within 0.05 of the populationWatch

#1
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.

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
http://mathhelpforum.com/statistics/...opulation.html (for images)
0
4 years ago
#2
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