7. Here is the data from observing random samples of taxi-cab drivers in two cities. The study wanted to know the difference in the proportion of cab drivers in the two cities
that wore a seat belt.
City
Cab Drivers
Belted
New York
n = 275
X = 225
Boston
n = 198
X = 154
I
Perform a significance test for the difference in proportion of cab drivers who wear their
seat belts in the two cities. Use a significance level of 0.05.

Say that a supplier claims they are 99% confident that their products will be in the interval of 50.02 to 50.38. you take samples and find that the 99% confidence interval of what they are sending is 50.00 to 50.36. what conclusion can be made? homework : 5vd. comparing sample confidence intervals with given intervals (links to an external site.)links to an external site. (3: 43) 5dc. confidence intervals in manufacturing, high vs low level of confidence, wide vs narrow (links to an external site.)links to an external site. (docx) the supplier is less accurate than they claimed the supplier products have a lower mean than claimed the supplier is more accurate than they claimed the supplier products have a higher mean than claimed