Question: Assume that a sample is used to estimate a population proportion pi. Find the margin of error ME. that corresponds to a sample of size

of size 83 with a mean of 80.3 and a standard deviation

of 7.7 at a confidence level of 98%. Report ME accurate to

Assume that a sample is used to estimate a population proportion pi. Find the margin of error ME. that corresponds to a sample of size 83 with a mean of 80.3 and a standard deviation of 7.7 at a confidence level of 98%. Report ME accurate to one decimal place because the sample statistics are presented with this accuracy. ME. = Answer should be obtained without anyr preliminary rounding. However, the critical value mayr be rounded to 3 decimal places. In a survey, 15 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $4? and standard deviation of $11. Construct a confidence interval at a 95% confidence level. Give your answers to one decimal place

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