Confirmed and Deaths in Worldwide and USA by COVID 19 as on May 26, 2020.
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Confirmed
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Deaths
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World
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5509398
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347206
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USA
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1675920
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99004
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Total
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7185318
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446210
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Source:- www.live population.com
John Hopkins/NBC Let P1 and P2 be the proportions of populations died to confirmed cases of COVID-19 in the world and USA.
We[i] set the Null Hypothesis H0:P1=P2
Alternative Hypothesis H1:P1 # P2
We have p = (n1p1+n2p2)/(n1+n2) and SE of p1-p2 )= sqrt (pq)(1/n1+1/n2)
Z = (p1-p2)/SE of P1-P2)
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Here
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n1=
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5509398
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p1 =
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0.063021
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n2 =
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1675920
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p2 =
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0.059074
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a1=
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347206
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a2=
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99004
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p=
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0.0621
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q =
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0.72
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p1-p2=
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0.003946
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p*q =
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0.044712
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(1/n1+1/n2) =
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7.78195E-00707
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=
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0.000187
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=
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S.E. of (p1-p2) =
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0.000187
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=
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21.16
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Z = 21.6>2.58 at 1% level of significance. Hence, we reject the Null Hypothesis H0 and conclude that the proportion of deaths to confirmed cases of COVID-19 is significantly higher in USA than Worldwide.
.