a histogram with $x=$ the number of times he blunders in a week, using categories of width $1$ unit, so that all of the following conditions are met.

$x$ lies in the interval $0,10.$

During a given week, there is a $70\%$ chance that he will make $3$ to $5$ blunders.

Never a week goes by that he doesn't make at least one blunder.

On occasion, he has made $10$ blunders in one week.

n$.1$