Coffee company wants to make sure that their coffee is being served at the right temperature. if it is too hot, the customers could burn themselves. if it is too cold, the customers will be unsatisfied. the company has determined that they want the average coffee temperature to be 65 degrees c. they take a sample of 20 orders of coffee and find the sample mean to be equal to 70.2 c what does mu represent for this problem?

the average temperature of coffee in the population, which is unknown.

the average temperature of coffee in the population, which is 70.2.

the average temperature of coffee in the sample, which is unknown.

the average temperature of coffee in the sample, which is 70.2.

The focus of a parabola is (-4,-5) and its directrix is y=-1 find the equation

The biologist has a second culture to examine. she knows that the population of the culture doubles every 15 minutes. after 1 hour and 15 minutes, her assistant found that 80,000 bacteria were present. a) what was the size of the initial population? b) predict the size of the culture at t=3 hours. what was the size of the population at 40 minutes? explain and justify your answers. c) create a graph of the population as a function of time. find an equation that can be used to predict the size of the population at any time t. d) examine the rate at which the bacteria culture is growing. how fast is the culture growing after 1 hour? after 1.5 hours? after 2 hours? use a time interval of h = 0.01 hours to estimate these rates. interpret these rates in terms of the context of the problem situation. how do these three rates compare?

Arepresentative from plan 1 wants to use the graph below to sell health plans for his company. how might the graph be redrawn to emphasize the difference between the cost per doctor visit for each of the three plans? the scale on the y-axis could be changed to 0–100. the scale on the y-axis could be changed to 25–40. the interval of the y-axis could be changed to count by 5s. the interval of the y-axis could be changed to count by 20s.