select the correct answer. how many times would a coin have to show heads in 50 tosses to have an…

select the correct answer. how many times would a coin have to show heads in 50 tosses to have an experimental probability of 70%?\na. 10\nb. 25\nc. 35\nd. 45

select the correct answer. how many times would a coin have to show heads in 50 tosses to have an experimental probability of 70%?\na. 10\nb. 25\nc. 35\nd. 45

Answer

Answer:

C. 35

Explanation:

Step1: Recall probability formula

The formula for experimental probability $P(A)=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}$. Let the number of times heads shows up be $x$. The total number of tosses is 50 and the probability $P = 0.7$.

Step2: Set up equation

We have $0.7=\frac{x}{50}$.

Step3: Solve for $x$

Multiply both sides of the equation by 50: $x = 0.7\times50=35$.