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Mathematics 13 Online
OpenStudy (awesomedude2078):

Calculate the upper and lower limit for a 95% confidence interval about this mean. A family needs a new car, but isn't sure they can fit the payment into their budget. A sample of 36 months of grocery bills yields a mean of $94 with a standard deviation of $10. If the upper limit of a 95% confidence level is below $100, the family can afford to buy the car. Standard error = (standard deviation)/(square root of sample size) Upper limit (dollars and cents) ___________ Lower limit (dollars and cents) __________

OpenStudy (awesomedude2078):

i got 1.67 for SE

OpenStudy (t-dawg02):

upper limit $97.267 lower limit $90.733

OpenStudy (t-dawg02):

@awesomedude2078

OpenStudy (awesomedude2078):

thanks

OpenStudy (awesomedude2078):

100%

OpenStudy (t-dawg02):

No problem

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