Stage N3 is defined as:

Stage N2 ends when:

Spindles can exist during Stage N3.

Slow waves are primarily seen in the ________ region, whereas Alpha is seen primarily in _________.

The weights (in pounds) of 30 newborn babies are listed below. Find P45. 4.9  5.8  5.8  5.9  6.1  6.1  6.4  6.4  6.5  6.6 6.7  6.7  6.7  6.9  7.0  7.0  7.0  7.1  7.2  7.2 7.4  7.5  7.7  7.7  7.8  8.0  8.1  8.1  8.3  8.9

The box-and-whisker plot shows the number of pigeons spotted by visitors at the park during the last weekend.

Given the following histogram, decide if the data is skewed or symmetrical.

A data set is summarized in the frequency table below. Using the table, determine the number of occurrences of

Give your answer as a single number. For example if you found the number of values was23, you would enter23.

A 10-N object falling at 20 m/s encounters 10 N of air resistance.  What is its falling speed 2 seconds after that particular moment? (a = Fnet /m,  v = a x t)