Assume the readings on thermometers are normally distributed with a mean of 0degrees°c and a standard deviation of 1.00degrees°c. find the probability that a randomly selected thermometer reads greater than negative 0.16 and draw a sketch of the region.

The readings on thermometers are normally distributed with a mean of 0°c and a standard deviation of 1.00°c

The distribution of readings on thermometer is standard normal.

The probability that selected thermometer reads greater than -0.16

P(z > -0.16) = 1- P(z < -0.16)

Using z score table to find probability below -0.16

P(z < -0.16) = 0.4364

P(z > -0.16) = 1- 0.4364

P(z > -0.16) = 0.5636

The probability that a randomly selected thermometer reads greater than negative 0.16 is 0.5636

b. b < 1 might be the correct answer

-3.5 degrees per hour

step-by-step explanation:

find the unit rate:

-12   1/4 degrees           12.25 degrees

= - = -3.5 degrees per hour

      3   1/2 hours               3.5 hours