Answer:
For a scientific experiment, a physicist must make sure that the temperature of metal at 0° C gets no colder than -80° C. The physicist changes the metal’s temperature at a steady rate of -4° C per hour. For how long can the physicists change the temperature?
Step-by-step explanation:
Answer:
Mckayla 30%
Jacob 30%
Daniel 20%
Samantha 10%
Maria 10%
Step-by-step explanation: First Divide 20% into half to get samantha and marias percent then add those together then subtract what you get from that to 100% and then divide into half for Mckayla and Jacobs percent
It will look like this
There is no horizontal aseymtope, because it passes through all of possible y
Answer:
(1)
The point estimate of the population mean is
we need to find first the degrees of freedom, given by:
Step-by-step explanation:
Previous concepts
A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".
The margin of error is the range of values below and above the sample statistic in a confidence interval.
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
represent the sample mean
population mean (variable of interest)
s=240 represent the sample standard deviation
n=64 represent the sample size
Solution to the problem
The confidence interval for the mean is given by the following formula:
(1)
The point estimate of the population mean is
we need to find first the degrees of freedom, given by: