Question

question 13
a may 2011 gallup poll found that many americans believe in ghosts and other supernatural phenomena. the poll was based on telephone responses from randomly - selected adults. the table shows the number of people who expressed belief in various phenomena.
using the results of the survey, complete the probability distribution table. please show your answers in decimals to 2 decimal places.
phenomenon frequency probability
psychic healing 509
esp 215
ghosts 215
astrology 133
channeling 686

Explanation:

Step1: Calculate total frequency

$509 + 215+215 + 333+686=1958$

Step2: Calculate probability for Psychic Healing

Probability = $\frac{\text{Frequency of Psychic Healing}}{\text{Total frequency}}=\frac{509}{1958}\approx 0.26$

Step3: Calculate probability for ESP

Probability = $\frac{215}{1958}\approx 0.11$

Step4: Calculate probability for Ghosts

Probability = $\frac{215}{1958}\approx 0.11$

Step5: Calculate probability for Astrology

Probability = $\frac{333}{1958}\approx 0.17$

Step6: Calculate probability for Channeling

Probability = $\frac{686}{1958}\approx 0.35$

Answer:

Phenomenon	Frequency	Probability
ESP	215	0.11
Ghosts	215	0.11
Astrology	333	0.17
Channeling	686	0.35