Anew concrete mix is being designed to provide adequate compressive strength for concrete blocks. the specification for a particular application calls for the blocks to have a mean compressive strength μ greater than 1350 kpa. a sample of 100 blocks is produced and tested. their mean compressive strength is 1358 kpa and their standard deviation is 75 kpa. a test is made of h0 : µ ≤ 1350 versus h1 : µ > 1350.] a) do you believe it is plausible that the blocks do not meet the specification, or are you convinced that they do? explain your reasoning by carrying out the appropriate hypothesis test.

b) if a sample of 10 blocks is produced and tested with their mean compressive strength at 1372 kpa and their standard deviation at 68 kpa. find the p-value based on the same hypothesis.

pakistan's principal natural resources are arable land and water. about 25% of pakistan's agriculture accounts for about 21% [1] of gdp and employs about 43% of the labour force. in pakistan, the most agricultural province is punjab where wheat and cotton are the most grown.

la parábola es el lugar

geométrico en el cual los puntos tienen una distancia idéntica, equidistantes,

de un punto denominado foco, f, y una recta denominada directriz

el radio vector de una

parábola es el segmento que existe entre un punto cualquiera y el foco.

por la ecuación se observa

que la parábola abre hacia la derecha, por lo cual podemos usar las siguientes fórmulas

la ecuación ordinaria de la

parábola es y^2 = 4px, donde p es la longitud desde el vértice de la parábola al

foco.

la fórmula de la directriz

es x + p = 0

resolviendo:

y^2-9x = 0

y^2 = 9x

4p = 9, entonces p = 9/4

entonces el foco tendrá la

coordenada f(9/4,0)

la directriz vendrá

expresada por

x + p = 0

x = -p

x = -9/4

el problema indica que la

ordenada es igual a 6, entonces

(6)^2=9x

x = 36/9

x = 4

entonces el punto al cual

hay que obtener la distancia será p(4,6)

calculando se tendrá: pf = 

pf = 6,25 u

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step-by-step explanation:

a) 0

step-by-step explanation:

i^413 x i^0 = 0 as any number multiplied by a zero is

happy to

pls mark as brainliest.