a) Your Communications division manufactures wireless dongles for use in general computing. These dongles have a maximum allowed radiative power of +20dBm. A random sample of ten dongles was taken, and their transmit power was measured by a colleague, using a spectrum analyser. The results are as follows: Sample 1 Power (+dBm) 包含 2 3 4 5 6 7 8 9 18.1 19.2 18.4 18.1 19.9 18.1 17.4 19.1 18.1 (11) Calculate the mean transmit power for these samples. Determine the standard deviation for the samples. Produce a Tally Chart showing the frequency of measured transmit powers. 10 17.4

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