The phrase "are likely to boost" is correct and usable in written English.
It can be used when discussing the potential positive impact or increase in something, often in a predictive context.
Example: "The new marketing strategy is expected to attract more customers and are likely to boost sales significantly."
Alternatives: "are expected to enhance" or "are probable to increase".
Such casualties are likely to boost international pressure for a ceasefire.
Helpfully, all the changes it needs to make are likely to boost domestic spending.
More speeches by himself and Colin Powell are likely to boost domestic support for war further.
Just under 2% of people who have arrived in Britain from EU countries since 2010 have claimed unemployment benefit, according to the Labour Force Survey.Indeed, far from draining the welfare state, the new migrants are likely to boost British coffers.
Carrey is the most high-profile addition to the cast for the sequel, but his comments are likely to boost rather than damage the film at the box office, just as the furore around Moretz's use of the C-word did little to damage interest in the original movie.
Fears about renewed North Korean military aggression sparked by Pyongyang's successful launch of a long-range rocket on Wednesday are likely to boost rightwing and nationalist candidates in crucial elections due in Japan and South Korea within the next week, regional analysts warned.
On past experience, it is likely to boost public support for staying in.
"The budget is likely to boost interest in central London as investors rush to get in before prices reach £1m.
Consumer and business groups welcomed the move, which is likely to boost spending power in the economy.
The exhibition is likely to boost interest in the artist, in turn raising the value of Hirst's collection.
Starbucks would also benefit from improved efficiencies through reduced waiting times and higher throughput, which was likely to boost profits.
