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Natali5045456 [20]
2 years ago
13

Mrs. gomes found that 40% of students at her high school take chemistry. she randomly surveys 12 students. what is the probabili

ty that exactly 4 students have taken chemistry? round the answer to the nearest thousandth. p (k successes) = subscript n baseline c subscript k baseline p superscript k baseline (1 minus p) superscript n minus k. subscript n baseline c subscript k baseline = startfraction n factorial over (n minus k) factorial times k factorial endfraction
Mathematics
1 answer:
andrew-mc [135]2 years ago
5 0

Answer:

0.213

Step-by-step explanation:

→ Convert into binomial information

x ~ B ( 12 , 0.4 )

→ Write down probability required

p ( x = 4 )

→ Evaluate

0.2128

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