The list of individuals from which a sample is actually selected is called the sampling frame. ideally, the frame should list every individual in the population, but in practice this is often difficult. a frame that leaves out part of the population is a common source of undercoverage.
suppose that a sample of households in a community is selected at random from the telephone directory.
what types of people do you think are likely to live in these households? these people will probably be underrepresented in the sample. (select all that apply.)1.people with extra time on their hands.2.people without the extra income to keep a phone line will largely comprise the population without a phone line.3.very busy people or those interested in maintaining privacy will largely comprise those with unlisted numbers.4.people who do not like to take surveys are likely to live in these households.

Step-by-step explanation:

answer to Step 1

Households with unlisted numbers or without telephones.

answer to Step 2

2.People without the extra income to keep a phone line will largely comprise the population without a phone line.

3.Very busy people or those interested in maintaining privacy will largely comprise those with unlisted numbers.

step-by-step explanation:

a.   since the profit made in 2012 is equal to the profit made in 2014, the profit is           symmetric about the line y = 120,000.

step-by-step explanation:

given that megan owns a clothing boutique.

the profits of 2010, 11, are recorded and shown as follows:

years since     2010 0     1     2     3       4       5

profits made in 1000's   39       84     111     120   111     84

we find that profit gradually increases form 2010 to 2013 upto 120,   then starts decreasing.

the profits for 2012 and 2014 are the same while that of 2011 and 2015 are also the same.

this shows that there is symmetry about the line profit = 120000

hence answer is:

a.   since the profit made in 2012 is equal to the profit made in 2014, the profit is           symmetric about the line y = 120,000.

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true

step-by-step explanation: