39. A study of 2000 teens found that the number of hours they spend on social networking sites each week is normally distributed with a mean of 30 hours. The population standard deviation is 2 hours. What is the 95%
confidence interval for the mean? Evaluate and then complete the sentence. (Hint: Look at the variables given
to determine if you need equation 1 or 2 from above.) (4 pts)
The margin of error is
% meaning that we are 95% sure the actual mean is between
and
Do number 39

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step-by-step explanation:

answer: 2 answers

step-by-step explanation: the first one means to spread the product throughout the marketplace such that a large number of people can buy it.  

the second means the process of making a product or service available for the consumer or business user that needs it.

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step-by-step explanation:

consider an orange peel: if you want to try and lay it flat, you have to stretch it, we know exactly how things are being stretched or squashed at any given point. we have many different map projections because each has different patterns of some projections can even preserve certain features of the earth without

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: