Statistical Problems Essay Example | Topics and Well Written Essays - 1250 words - 1

Statistical Problems - Essay ExampleThe approximation becomes better with change magnitude sample sizeThe simple random sample of 50 women with one job is greater than 30. Therefore, in this case Central Limit Theorem is applicable and the statistical distribution of the sample can be assumed as normally distributed.(b)The percentage of all samples of 50 women with one job that have the mean length of period employed within 20 weeks of the population mean is (approximately) equal to the area under the normal curve with parameters and 13.01 that lies between - 20 and + 20. The corresponding z-scores are(c) zero(prenominal) If I bought one bag of pissing-softener salt and it weighed 39 lb, I would not consider this evidence that companys claim is incorrect. Because there is 25.14% probability that the weight down of one randomly selected bag of water softener salt will be 39lb or less.(d)Yes. If I bought 10 bag of water-softener salt and it mean weight was 39 lb, I would conside r this evidence that companys claim is incorrect. Because there is only 1.74% probability that the mean weight of 10 randomly selected bag of water softener salt will be 39lb or