Noise levels at various area urban hospitals were measured in decibels. The mean of the noise levels in 24 randomly selected corridors was 61.8 decibels. The sample standard deviation is 6.9. Find the 90% confidence interval of the true mean. Assume the distribution of noise level is normal.

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i

all group life insurance is term insurance. actually it is annual renewable term and it is rated on the average age and claims experience of the entire group, which is called "experience rating." remember, this type of insurance has a 31-day grace period and is convertible to whole life upon leaving employment. a contributory group plan requires that both the employer and the employees pay part of the premium. at least 75% of those eligible must participate, so the group is sure to get most of the healthy employees as well as those that are sick.

step-by-step explanation:

a c

step-by-step explanation:

16 is the absolute value

step-by-step explanation: