For each of 40 students in one county the number of days absent from school in the 1) previous year were counted, with the results shown in the frequency table: Number of absent days 0 1 2 3 4 5 Number of students 24 7 5 2 1 1 Construct a 90%confidence interval for the average number of days absent from school of all students in the county.

Ametalworker has a metal alloy that is 30? % copper and another alloy that is 55? % copper. how many kilograms of each alloy should the metalworker combine to create 90 kg of a 50? % copper? alloy?

G(x) = 2 sin(2x - π) + 4. using complete sentences, explain how to find the minimum value for the function.

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean