Fill in the blanks based on the patterns in the data.
a. For restaurants, the correlation between average noise level and time becomes ________ (stronger, weaker) if you exclude the two lunch-time measurements.
b. For stores, the noise level _______ (is, is not) related to time of day.
c. For the all other locations (Plot D), the suggestion of a possible relationship between noise level and time of day becomes ________ (stronger, weaker) if you exclude the gym measured at 6:30 pm.
d. On average, restaurants are ________ (more, less) noisy than stores.
e. On average, decibel levels measured later in the day tend to be ________ (higher, lower) than those measured earlier in the day.
f. Time of day ________ (is, is not) confounded with type of location.
g. For _______ (restaurants, stores, other locations) the fitted noise level increases by more than 10 decibels during the 3 hours from 7 pm to 10 pm.

h. If you go by the fitted line for all restaurants, the predicted decibel level at 5 pm is closest to ______ (round to the nearest 10 dB).