For employees at a large company, the mean number of overtime hours worked each week is 9.2 hours with a population standard deviation of 1.6 hours. A random sample of 49 employees was taken and the probability that the mean number of overtime hours will be at least 9.3 hours was determined. Was the probability a Left-tail, Right -tail or Interval Probability

And for this case we can find this probability using the normal standard table and with the complement rule we got:

Step-by-step explanation:

We have the following information given:

represent the mean

the population deviation

the sample size selected

We want to find the following probability:

And for this case we can conclude that is a Right tail probability

And in order to solve it we can use the z score formula given by:

And replacing we got:

And for this case we can find this probability using the normal standard table and with the complement rule we got:

the circle graph is not a function.

step-by-step explanation:

the graph of the circle is not a function.

because for a graph to be a function, each value of x must give one value of y

in the circle, the values of x for -2< x< 2 each give 2 values of y.

hence this is not a function.

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.