Local government officials would like to know if city residents are generally satisfied with the cleanliness of local streets and recreation areas. To estimate the level of satisfaction, city officials appear on a local television morning show, where residents are invited to share their satisfaction through an online poll. Which of the following statements best describes the potential results from this poll? This is a convenience sample and is likely to overestimate the proportion of residents satisfied with the cleanliness of the area.
This is a convenience sample and is likely to underestimate the proportion of residents satisfied with the cleanliness of the area.
This is a voluntary response sample and is likely to overestimate the proportion of residents satisfied with the cleanliness of the area.
This is a voluntary response sample and is likely to underestimate the proportion of residents satisfied with the cleanliness of the area.

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step-by-step explanation:

if gloria has "carry over" minutes, (that is, any minutes paid for but not used in a month can be applied to her payment for minutes in the next month,) her total usage for the three months is: total minutes = 320 + 243 + 489 = 1052 minutes number of 200 minute blocks = 1052/200 = 5 r52 (that is 5 with a remainder of 52) rounding up the number of 200 minute blocks gives her usage for the three months as 6 blocks. the cost for six blocks is 6 x $25 = $150 she also has 200 - 52 or 148 carry over minutes if gloria pays each month and unused minutes are lost, applying the rounding up procedure to each month gives: first month usage of 320 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 second month usage of 243 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 third month usage of 489 minutes rounds up to 3 blocks of 200 minutes for a payment of 3 x $25 = $75 total payments for the three months are $50 + $50 + $75 = $175 get the plan with carry over minutes!