Answer:
At least 16 calls must be made.
Step-by-step explanation:
It is given that Joes electric made 19 customer calls last week and 25 this week.
Let x calls be made next week in a order to maintain an average of at least 20 calls per week for three week period.
Average at least 20.
Hence, at least 16 calls must be made.
Option: D is the correct answer.
D. 0.45
<h2>Step-by-step explanation:</h2>The results of the experiment are given as follows:
Coin Experiment Side of Coin Number of Tosses
Heads 18
Tails 22
This means that total 40 experiments were performed.
( Since 18+22=40)
Also, the number of times head turn up=18
Hence, the experimental probability of getting heads is:
Ratio of number of times head turn up to the total number of experiments performed.
Hence,
Hence, the experimental probability of getting head is:
0.45