In asurvey, cell phone users were asked which ear they use to hear their cellphone, and the table is based on their responses. Determine whether a probability distribution is given. If a probability distribution isgiven, find its mean and standard deviation. If a probability distribution is notgiven, identify the requirements that are not satisfied.

P(x)

Left

0.6361

Right

0.3042

No preference

Does the table show a probabilitydistribution?

Find the mean of the random variable x. Select the correct choice belowand, ifnecessary, fill in the answer box to complete your choice.

A.

=(Round to one decimal place asneeded.)

B.The table does not show a probability distribution.

Find the standard deviation of the random variable x. Select the correct choice belowand, ifnecessary, fill in the answer box to complete your choice.

A.

=(Round to one decimal place asneeded.)

B.

The table does not show a probability distribution.