Using the results from Problem 9, is the result of 31,465 girls in 60,654 births a result that is significantly high? Why or why not

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Using the results from Problem 9, is the result of 31,465 girls in 60,654 births a result that is significantly high? Why or why not?

9. The above table includes 257,264 Hispanic babies. For groups of 257,264 babies, find the mean and
standard deviation for the number of girls, assuming that the probability of a girl is being born is the
rounded result from Problem 6. Round to four decimal places.
Mean = (131129+126135)/2
= 257264/2
= 128632
Standard Deviation sq rt(((131129 – 128632)^2 + (126135 – 128632)^2)/1)
= sq rt((2497)^2+(2497)^2)
= sq rt(2(2497)^2)
= 2497(sq rt(2))
= 2497 * 1.414
= 3530.758
P(girl) = 126135/257264
= 0.49 or 49%
Mean is 128,632. Standard Deviation is 3,530.758. The probability of getting a girl is 49%.
Transcribed Image Text:9. The above table includes 257,264 Hispanic babies. For groups of 257,264 babies, find the mean and standard deviation for the number of girls, assuming that the probability of a girl is being born is the rounded result from Problem 6. Round to four decimal places. Mean = (131129+126135)/2 = 257264/2 = 128632 Standard Deviation sq rt(((131129 – 128632)^2 + (126135 – 128632)^2)/1) = sq rt((2497)^2+(2497)^2) = sq rt(2(2497)^2) = 2497(sq rt(2)) = 2497 * 1.414 = 3530.758 P(girl) = 126135/257264 = 0.49 or 49% Mean is 128,632. Standard Deviation is 3,530.758. The probability of getting a girl is 49%.
Other
African
American
Asian
Hispanic
White
Boy
31,465
14,051
131,129
72,242
12,208
Girl
29,189
13,653
126,135
68, 428
11,473
Transcribed Image Text:Other African American Asian Hispanic White Boy 31,465 14,051 131,129 72,242 12,208 Girl 29,189 13,653 126,135 68, 428 11,473
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