Una compañía petrolera afirma que un quinto de las casas en cierta ciudad se calientan con petróleo. ¿Tenemos razón para creer que menos de 1/5 se calientan con petróleo si, si en una muestra aleatoria de 1000 casas en esta ciudad, se encuentra que 136 se calientan con petróleo? Utilice un valor P en su conclusión.

si oh eso creo yo no se mucho de matemáticas

answer: for each 3 girls there is 2 boys . 3: 2

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2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.