A z-score of 2.5 corresponds to a data point
such that
Answer:
The p value for this case would be given by:
Since the p value is lower than the significance level of 0.05 we have enough evidence to conclude that the true mean for the assembly time is significantly different from 40 minutes.
Step-by-step explanation:
Information provided
represent the sample mean for the assembly time
represent the sample deviation
sample size
represent the value to verify
represent the significance level
t would represent the statistic
represent the p value for the test
System of hypothesis
We want to conduct a hypothesis in order to see if the true mean is equal to 40 minutes or not, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
The statistic for this case is given by:
(1)
Replacing the info given we got:
The p value for this case would be given by:
Since the p value is lower than the significance level of 0.05 we have enough evidence to conclude that the true mean for the assembly time is significantly different from 40 minutes.
Answer:
Volume V= πr²h
Volume V= base * height
Step-by-step explanation:
Volume is the capacity of an object which is obtained by multiplying area with height. Volume of a cylinder is generally calculated by two formulas.
Volume of a cylinder V= πr²h Where r is the radius and h is the height
Volume of a cylinder V= base * height
If we analyse the two formula keeping in mind that the base of the cylinder is circular . The area of a circle is given by πr². In this first formula we can find the area of the base by applying the formula of the circular region. Volume is measured by multiplying length , breadth and height, or area with height. In both the formulas given above we find the area and then multiply with the height.
well, you saw it on the previous exercise, 8.25 x 10⁻⁶, it <u>looks</u> like 8.25 is some value between 1 and 10, but is not really, the 10⁻⁶ is disguising that is really much smaller than that, in fact much smaller than even 1.
It must be that all the cookies have been eaten