Find the probability of exactly four successes in five trials of a binomial experiment in which the probability of success is 40%. round to the nearest tenth of a percent.

It costs 4.25 for 1 pound of roast beef. how much will it cost to purchase 2.5 pounds of roast beef? round to nearest cent

I'm confused on this could anyone me and show me what i need to do to solve it.

50 people men and women were asked if they watched at least one sport on tv. 20 of the people surveyed are women, but only 9 of them watch at least one sport on tv. 16 of the men watch at least one sport on tv. make a a two-way table and a relative frequency table to represent the data.