Find the 95 confidence interval for the true mean decrease

Reference no: EM13615119

The addition of a new accelerator is claimed to decrease the drying time of latex paint by more than 4%. Several test samples were conducted with the following percentage decrease in drying time. Assume that the percentage decrease in drying time is normally distributed.

5.1 6.5 3.9 6.0 3.5 2.4 2.8 4.3

(a) Find the 95% confidence interval for the true mean decrease in the drying time based on this sample. (Give your answers correct to two decimal places.)

Reference no: EM13615119

Questions Cloud

On january 2 2009 hill company borrowed 10000 from : a on july 1 2009 prism inc. borrowed 30000 from firstbank on a one year 10 note payable. interest is payable onjune 30

A car with a flat top contains a 32-cm thick piece of ice : a car with a flat top contains a 3.2-cm thick piece of ice lying on its top. determine how fast this car must travel

In a recent survey of full-time female workers ages 22 to : in a recent survey of full-time female workers ages 22 to 35 years 46 said they would rather give up some of their

The plank is displaced by a small angle from its : a horizontal plank of mass m and length l is pivoted at one end. the planks other end is supported by a spring of force

Find the 95 confidence interval for the true mean decrease : the addition of a new accelerator is claimed to decrease the drying time of latex paint by more than 4. several test

Alexis is a cpa employed by a national accounting firm : alexis is a cpa employed by a national accounting firm. althoughshe usually commutes daily to the downtown office on

If the drain is now opened determine how fast the water : a cylindrical tank having a radius 5 m and height h 5 m is filled with water with the top end of the tank exposed

If a 10000 sale is made on january 1st with terms of : if a 10000 sale is made on january 1st with terms of 210n30 how much would the discount be if payment is made on

Is there sufficient evidence to conclude that there is a : the blood pressure measurements of a single patient were taken by twelve different medical student and the results are

User Account

All Pages