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A Philanthropic Organization Helped a Town in Africa Dig Several

question 22

Essay

A philanthropic organization helped a town in Africa dig several wells to gain access to clean water.Before the wells were in place,an average of 120 infants contracted typhoid each month.After the wells were installed,the philanthropic organization surveyed for nine months and found an average of 90 infants contracted typhoid per month.Assume that the population standard deviation is 40 and the number of infants that contract typhoid is normally distributed.
A)Specify the null and alternative hypotheses to determine whether the average number of infants that contract typhoid has decreased since the wells were put in place.
B)Calculate the value of the test statistic and the p-value.
C)At the 5% significance level,can you conclude that the number of babies falling ill due to typhoid has decreased? Explain.

Definitions:

Black Life

Refers to the experiences, culture, and societal contributions of people of African descent.

An American Dilemma

An American Dilemma is a landmark sociological study by Gunnar Myrdal (1944) that addressed the problem of race relations and racial injustice in the United States, highlighting the contradiction between the American ideals of equality and the treatment of African Americans.

Gunnar Myrdal

A Swedish economist and sociologist, known for his influential study on race relations in the United States titled "An American Dilemma" (1944).

Democratic Ideals

Principles that support the belief in equality, freedom, and justice within a societal system where government is carried out by the people, either directly or through elected representatives.