Since careful records have begun being kept in January

1.Since careful records have begun being kept in January, Erica's small business has
delivered the following quantities of flowers throughout town.
January February March April May June July August
TINY BOUQUETS 85 34 26 24 43 29 30 19
LARGE BTS. 23 64 27 18 33 23 20 13
Assuming the data is normally distributed, _construct two separate 90% confidence
intervals, one for the number of deliveries of small bouquets in September and one for
the number of large bouquets in September.

2-A quality control experiment is to be done on a machine that fills tubes with candy.
Its specifications require that it fill tubes with 4. 7oz. A random sample of 40 tubes filled
by the machine is taken and each tube is weighed. The resulting data are below, with
the weight of the tube already having been subtracted from each:. Perform a hypothesis
test at the 90% confidence level to determine if the machine· is performing according to
specifications.
4.66 4.61 4.71 4.63 4.70 4.62 4.63 4.61 4.7b 4.56
4.60 4.66 4.68 4.57 4.67 4.72 4.67 4.64 4.66 4.75
4.69 4.64 4.67 4.65 4.69 4.65 4.75 4.53 4.57 4.74
4.68 4.67 4.66 4.68 4.64 4.65 4.64 4.80 4.71 4.69