Question

does the frequency distribution appear to have a normal distribution? explain. temperature (°f) frequency 45 - 49 1 50 - 54 4 55 - 59 7 60 - 64 13 65 - 69 7 70 - 74 4 75 - 79 1 choose the correct answer below. a. no, because the frequencies start low, proceed to one or two high frequencies, then decrease to a low frequency, and the distribution is approximately symmetric. b. no, because the frequencies start low, proceed to one or two high frequencies, then decrease to a low frequency, and the distribution is not symmetric. c. yes, because the frequencies start low, proceed to one or two high frequencies, then increase to a maximum, and the distribution is not symmetric. d. yes, because the frequencies start low, proceed to one or two high frequencies, then decrease to a low frequency, and the distribution is approximately symmetric.

Explanation:

Step1: Recall normal - distribution properties

A normal distribution has frequencies starting low, increasing to a maximum, and then decreasing symmetrically to low frequencies again.

Step2: Analyze given frequencies

The frequencies are 1, 4, 7, 13, 7, 4, 1. They start low (1), increase to a maximum (13), and then decrease symmetrically back to low frequencies (1).

Answer:

D. Yes, because the frequencies start low, proceed to one or two high frequencies, then decrease to a low frequency, and the distribution is approximately symmetric.