c o D www.webassign netweb/student/Assonment Responsessubmindep 5717096 Radon is

Question

c o D www.webassign netweb/student/Assonment Responsessubmindep 5717096 Radon is a naturally occuring gas and isthe second leading cause of lung cancer in the United States. the natural breakdown of uranium in the sol and enters buildings through racks and other holes the foundetions. Found throughout It comes from state to state. Several can reduce the levels of radon in the unted states, levels vary from your home, and the tnvironmental Protection Agency recommends using one of these if the measured level in your home above 4 picocures per er, four readngsfrom a county in the state of ohio, where the county average is 8.4 picocuries per lter, were s 4, 13.2, 2.6 and s s. (a) rind the mean step-by-step. That is, find the sum of the 4 observations and divide by (enter your answers to one decimal place) the randerd by step. That find the deviatons of each observation tem the mean, seruare the deviations, obtem the lance and the deviation. (Round your answers to two decimal places.) (e) Now enter the data into your calculator end use the mean and standard deviation buttons to obtain x and s. (Round your answers to two decamal Do the results agree with your hand coloulations?

Explanation / Answer

answer

yes, the both calculations are same.

Xi Xi-Xbar (Xi-Xbar)^2 5.4 -5.1 26.01 13.2 2.7 7.29 7.6 -2.9 8.41 15.8 5.3 28.09 sum 42 Sum 69.8 mean 10.5 S^2 23.26667 s= 4.823553 Xbar 10.5 S 23.26667

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