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1) Given that you have a sample size of 400 and you get a mean of...

1) Given that you have a sample size of 400 and you get a mean of 25 and it has a SD of 2. Estimate the standard error and calculate the low and high ends of a 95% confidence interval

Standard Error:__________

Low CI boundary:_________

Hi CI boundary:________

2) Given that you have a sample size of 475, 74% of your respondents said they have to work while in college to make ends meet, and this variable has a SD of .21. Estimate the standard error and calculate the low and high ends of a 95% confidence interval for this proportion.

Standard Error:__________

Low CI boundary:_________

Hi CI boundary:________

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