Noise levels at five volcanoes are measured in decibels yielding the following data: 127, 174, 157, 120, 161. Construct a 98% confidence interval for the mean noise level at such locations. Assume the population is approximately normal. Calculate the sample standard deviation for the given sample data

Create a graph for the demand for starfish using the following data table: quantity/price of starfish quantity (x axis) of starfish in dozens price (y axis) of starfish per dozen 0 8 2 6 3 5 5 2 7 1 9 0 is the relationship between the price of starfish and the quantity demanded inverse or direct? why? how many dozens of starfish are demanded at a price of five? calculate the slope of the line between the prices of 6 (quantity of 2) and 1 (quantity of 7) per dozen. describe the line when there is a direct relationship between price and quantity.

Math i have no idea how to do a and b

Rounded to the nearest tenth, what is the value of x