When the parameters of a population are known, the likelihood of obtaining a certain mean value, ¯ x , from a small sample can be predicted by the z‐variable with z = ( ¯ x − x ' ) / σ / √ n . consider a stamping process in which the applied load has a known true mean of 400 n with standard deviation of 25 n. if 25 measurements of applied load are taken at random, what is the probability that this sampling will have a mean value between 390 and 410?

0.9545

Step-by-step explanation:

Given : Population mean :

Standard deviation :

Sample size : n=25

Test statistic :

For , we have

For , we have

Now, by using the standard normal distribution table for z , we have

Hence, probability that this sampling will have a mean value between 390 and 410 = 0.9545

answer: y=4000x+14000

step-by-step explanation:

the number of the people going.

step-by-step explanation:

the cost to buy one movie ticket is $7. if the total cost for the movie is a function of how many people go, then the input is : the number of the people going.