Question 2 of 12 - .o' 2 E View Policies Current Attempt in Progress Suppose a small town in British Columbia contains 1,500 houses. A sample of 90 houses is selected randomly and evaluated by an appraiser: If the mean appraised value of a house in this town for all houses is $276,000, with a standard deviation of $ 10,?00, what the probability that the sample average is greater than $23?,000? [Round the values of z to 2 decimal places, ea. 1.25. Round your answer to 4 decimal places, e3. 0.?5P'8J | l Question 3 of 12 - f 2 E View Policies Current Attempt in Progress A manufacturing plant produces steel rods. During one production run of 20,000 such rods, the specications called for rods that were 46 cm in length and 3.3 cm in width. Fifteen of these rods making up a random sample were measured for length; the resulting measurements are shown here. Use these data to estimate the population variance of length for the rods. Assume rod length is normally distributed in the population. Construct a 99% condence interval. Discuss the ramications of the results. 44cm 47cm 43cm 46cm 46cm 45cm 43cm 44cm 47cm 46cm 48cm 48cm 43cm 44cm 45cm [Round your answers to 2 decimal places, 9.3. 135.] sags