Bind checkbox angular with input

Using tour of heroes for a a reference that I am trying to modify for what I want to do.

When the page loads I will have multiple choices for a user to decide which item is to be used.

I want the checkbox unselected unless the list item is selected. Two problems are the checkbox doesnt show unless i select an item, and selecting an item doesnt check the box. just makes it appear. Image of two boxes selecting input sample code below. HTML CODE

<div class="card-box">
                        <div class="card-row">
                            <div class="col-md-12">
                                <h3>Duns Number <span class="float-right" *ngIf="selectedHero">
                                        <input #selectedHero id="selectedHero" type="checkbox" [checked]="selectedHeroBox"
                                            (change)="onselectedHero(selectedHero.checked)" type="checkbox">
                                    </span>
                                </h3>
                            </div>
                        </div>
                        <div class="row">
                            <div class="col-md-12">
                                <p class="greyColor">numeric field</p>
                            </div>
                        </div>
                        <div class="row padTop30">
                            <div class="col-md-12 selItem" style="cursor: pointer;">
                                <ul class="heroes">
                                    <li *ngFor="let hero of heroes" [class.selected]="hero === selectedHero"
                                        (click)="onSelect(hero)">
                                    </li>
                                </ul>
                            </div>
                        </div>
                    </div>

Component

heroes = HEROES;
selectedHero: Hero;
selectedHeroBox: boolean;

onSelect(hero: Hero): void {
    this.selectedHero = hero;
}
public onselectedHero(value: boolean) {
    this.selectedHeroBox = value;
}