please help with this question c Give the plus four 95 confi

(c) Give the plus four 95% confidence interval for the difference between the proportion of athletes using drugs at s chools with and without testing. (Use pWahtonka - pWarrenton . Round your answers to four decimal.) The air in poultry-processing plants often contains fungus spores. Inadequate ventilatIon can affect the health of the workers. The problem is most serious during the summer and least serious during the winter. To measure the presence of spores, air samples are pumped to an agar plate and \'\'colony forming units (CFUS)\'\' are counted after an incubation period. Here are data from the \'\'kill room\'\' of a plant that processes 37,000 turkeys per day, taken on four separate days in the summer and in the winter. The units are CEUs per cubic meter of air.

Solution

Two-Sample T-Test and CI: summer, winter

Two-sample T for summer vs winter

N Mean StDev SE Mean
summer 4 2136 907 453
winter 4 211 138 69

Difference = mu (summer) - mu (winter)
Estimate for difference: 1925
95% lower bound for difference: 1033
T-Test of difference = 0 (vs >): T-Value = 4.20 P-Value = 0.003 DF = 6
Both use Pooled StDev = 648.5792