Amelting point test of n = 10 samples of a binder used in manufacturing a rocket propellant resulted in a sample mean of 153.5 °f. assume that the melting point is normally distributed with σ = 1.5°f. is it possible to conclude at 1% significance that the melting point is not 155°f? what is the value of zcalc ? report your answer in 3 decimal places.

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

The graph of f(x) shown below has the same shape as the graph of g(x)=x^3-x^2 but it is shifted to the left 2 units what is its equation

How many zeroes do we write when we write all the integers 1 to 243 in base 3?