Answer:
Using the complement rule and the normal standard table or excel we have this:
Step-by-step explanation:
Previous concepts
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".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the heights of a population, and for this case we assume the distribution for X is given by:
Where and
And we select a sample of n =64. Since the distribution for X is normal then the distribution for the sample mean is given by:
And we want to find the following probability:
And we can use the z score given by this formula:
Using the complement rule and the normal standard table or excel we have this:
Answer:
Study more on slopes
Step-by-step explanation:
I figured it out just by glancing at it
Answer:
6(8z+7q)
Step-by-step explanation:
48z+42q
Factor out 6.
6(8z+7q)