Researchers collected data on the numbers or hospital admissions resulsing tom m

Question

Researchers collected data on the numbers or hospital admissions resulsing tom motorvehicle aashes and esuts are gvenbelow for Fridays on emofamonth and Fridays on the following 13th of the same month use a aos signifoanee 4 Friday the 6th Friday the 13th the hypotheses in the number of hospital admissions resulting from motor vehicle crashesforthe popu ton of al pairs of data t. (Round to three decimal places as r nded ldertry the orisoal wakeel) Select comeet choice below and the answer box within your choice Round to three decimal places as needed O A The erisoal values are O B. The artical value ist. State Mesut ofhe test. Choosethe comect answer below to warrant nieetion daim of no effect Hospital admissions do not appearto be afected. O A There is sufficient evidence B. There is not suficient evidenee towamant wection of dam of no effect Hospital admissions do not appear to be afected to amant ejection the claim of no efect Hospita admissions appear to be afected, C. Thone is sufficient evidence Click to select your answers.

Explanation / Answer

Mud be the difference between the means

H0 : mud = 0

Ha : mud < 0

Test statistic :

x1 = 7.167 , s1 = 3.6 , x2 = 10.5 , s2 = 2.9 , n1 = n2 = 6

SE = sqrt [ (s12/n1) + (s22/n2) ]

= sqrt [ ( 3.6^2 / 6 + 2.9^2 / 6)]

= 1.88

t = [ (x1 - x2) - d ] / SE

= [(7.167 - 10.5 ) - 0 / 1.88]

= -1.773

Critical values are t = + / - 2.228

Critical values are t = -1.812

We fail to reject the null hypothesis . There is not sufficient evidence to support the claim.

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