grades on a political test and the other number of hours paid work in the week b
ID: 2931844 • Letter: G
Question
grades on a political test and the other number of hours paid work in the week before grades on a political test and the other number of hours paid work in the week before grades on a political test and the other number of hours paid work in the week before grades on a political test and the other number of hours paid work in the week before Safari File Edit View History Bookmarks Window Help ? 51% Sun 10:48 PM a mathxl.com MATH 227: Statistics Mon/Wed. 7:00 to 9:05 p.m) BRENDA ACUNA 1022/17 10:48 PM Test: Test #2 (Due Monday, October 23, at 7:00 pm) Submit Test This Test: 100 pts possible Question Help Q This Question: 10 pts 5 of 10 In a test of a gender-selection technique, results consisted of 256 baby giris and 242 baby boys Based on this result, what is the probablity of a girl bom to a couple using this Sechnique? Doss it appser hat the technique is effective in increasing the likelhood that a baby wil be a gi? The probabilty that a giri will be bom using this technique is approximately (Type an integer or decimal rounded to three decimal places as needed.) Does the technique appear effectivo in improving the likelhood of having a gin baby? O Yes Cick to select your anvswerls) Save for LaterExplanation / Answer
probability of girl = 256/(256+242) = 0.514056 = 0.514
Test of p = 0.5 vs p > 0.5
Sample X N Sample p 95% Lower Bound Z-Value P-Value
1 256 498 0.514056 0.477217 0.63 0.265
p-value = 0.265 > 0.05
we fail to reject the null
hence No is correct
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