Final answer:
While the exact figure for the average winning House candidate spend in the 2011-2012 election cycle isn't provided, by 2020 the cost had risen to an average of $2.4 million. In the 2012 campaigns, the contributions from individuals to House candidates fell between $287,109 and $850,637 with 95 percent confidence.
Step-by-step explanation:
The average winning House candidate in the 2011-2012 election cycle spent a significant amount of money on their campaign, even though a precise average is not provided from the data given. However, we can look at the trends and see that campaign costs have been increasing over the years.
By 2020, the average cost of running a successful House campaign was $2.4 million. If we track that growth back to the 2012 campaign season, it's plausible that the amount was lower but still considerable compared to past decades.
It's also important to note that according to the Federal Election Commission, the mean amount of contributions received from individuals by House candidates during the same period was estimated with 95 percent confidence to be between $287,109 and $850,637.
These contributions play a critical role in funding the campaigns, covering expenses such as advertising, fundraising, travel, and staff.