Un carpintero tiene $60 para gastar en materiales. Necesita comprar clavos y tornillos. La caja de clavos cuesta $12.95 y la caja de tornillos cuesta $14.95. Sea c la cantidad de cajas de clavos que puede comprar y seat la cantidad de cajas de tornillos que puede comrar. Sobre el numero de cajas de cada uno de los materiales que puede comprar con el dinero de que dispone, escribe la desigualdad que representa dicho problema relacionando dinero con el numero de cajas. NO TIENES QUE RESOLVERLA!​

Anull hypothesis states that the difference between 8 hours of sleep and 3 hours of sleep has no effect on the number of pictures a student will remember during a picture memory interface test (pmit). examining the mit database, an extremely small t-value of 0.1611 is found. this t-value is much smaller than the smallest t-value on the chart for p-value reference. from this information we can: select one: a. accept the null hypothesis because the p-value obtained shows that the difference between the two groups being tested is not statistically significant b. accept the null hypothesis because the p-value obtained was statistically significant c. reject the null hypothesis because of the p-value obtained d. reject the null hypothesis because the data obtained is statistically significant