According to National Testing data, college math class testing times are Normally distributed with a mean of 49 minutes and standard deviation 6 minutes. The bell curve below represents the probability distribution for testing times. The scale on the horizontal axis is equal to the standard deviation. Fill in the three indicated boxes.

In the accompanying​ table, the random variable x represents the number of televisions in a household in a certain country. Determine whether or not the table is a probability distribution. If it is a probability​ distribution, find its mean and standard deviation.LOADING...  Click the icon to view the data.Question content area bottomPart 1If the table is a probability​ distribution, what is its​ mean? Select the correct choice below and fill in any answer boxes within your choice.A.Its mean is enter your response here.​(Round to the nearest tenth as​ needed.)B.The table is not a probability distribution.Part 2If the table is a probability​ distribution, what is its standard​ deviation? Select the correct choice below and fill in any answer boxes within your choice.A.Its standard deviation is enter your response here.​(Round to the nearest tenth as​ needed.)B.The table is not a probability distribution.x​P(x)00.0210.1720.2430.2540.1850.14

Find the range, the standard deviation, and the variance for the given samples. Round non-integers results to the nearest tenth.  74, 80, 76, 70, 69, 87, 59, 66, 52

Type in your answer below: As in the previous question, female's pulse rates are normally distributed with a mean 74 beats per minute and a standard deviation 12.5 beats per minute. Find the probability that a female has a pulse rate between 60 beats per minute and 70 beats per minute. You can use a calculator or table A-2 in your textbook. Round your answer to three decimal places.