Some scientists believe that the sickle-cell trait lowers the risk of developing malaria. To explore this belief, 398 children in Africa were tested for the sickle-cell trait and malaria. The results are presented in Table 1 Test, at the 5% level of significance, whether there is an association between the sickle- cell trait and malaria. Step 1:   Step 2:   Step 3:   Step 4:   Step 5:   Step 6:

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Some scientists believe that the sickle-cell trait lowers the risk of developing malaria. To explore this belief, 398 children in Africa were tested for the sickle-cell trait and malaria. The results are presented in Table 1

Test, at the 5% level of significance, whether there is an association between the sickle- cell trait and malaria.

Step 1:

 

Step 2:

 

Step 3:

 

Step 4:

 

Step 5:

 

Step 6:

 

 

Table 1: Two-way Table of Counts
Malaria Infection
Sickle-cell trait
Yes
No
Total
Present
45
103
148
Absent
104
146
250
Total
149
249
398
Transcribed Image Text:Table 1: Two-way Table of Counts Malaria Infection Sickle-cell trait Yes No Total Present 45 103 148 Absent 104 146 250 Total 149 249 398
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