Transcript 12.7 distrbutions

Monday Warm Up
1. A study concluded people surveyed enjoyed the Settlers of
Catan. The margin of error was 4%. Find the sample size.
Look on page 679 if you are stuck.
2. In a survey of 32 people 30 return the milk carton to the
fridge right after using it.
a) Find the sample proportion
b) the margin of error
c) the interval likely to contain the true population
proportion.
Find the mean, range, and standard deviation of the
price in dollars of the same bag of groceries being sold
at ten different supermarkets.
68% of the data falls within 1 SD of the mean
95% of the data falls within 2 SD of the mean
100% of the data falls within 3 SD of the mean
Problems to do:
pg. 695 9 - 27 odd & pg. 689 15-17, 24
Test Wednesday
Tutoring Wed/Thurs San
Juan open space
till 5pm.