A polling company reported that 29% of 1018 surveyed adults said that cellular phones are "quite annoying." Complete parts (a) through (d) below. a. What is the exact value that is 29% of 1018? The exact value is. (Type an integer or a decimal.) b. Could the result from part (a) be the actual number of adults who said that cellular phones are "quite annoying"? Why or why not? O A. Yes, the result from part (a) could be the actual number of adults who said that cellular phones are "quite annoying" because the polling numb are accurate. O B. No, the result from part (a) could not be the actual number of adults who said that cellular phones are "quite annoying" because a count of people must result in a whole number. O C. No, the result from part (a) could not be the actual number of adults who said that cellular phones are "quite annoying" because that is a very rare opinion. O D. Yes, the result from part (a) could be the actual number of adults who said that cellular phones are "quite annoying" because the results are statistically significant. c. What could be the actual number of adults who said that cellular phones are "quite annoying"? The actual number of adults with this opinion could be . (Type an integer or a decimal.) d. Among the 1018 respondents, 319 said that cellular phones are "not at all annoying." What percentage of respondents said that cellular phones are "not at all annoying"? % (Round to two decimal places as needed.)
Addition Rule of Probability
It simply refers to the likelihood of an event taking place whenever the occurrence of an event is uncertain. The probability of a single event can be calculated by dividing the number of successful trials of that event by the total number of trials.
Expected Value
When a large number of trials are performed for any random variable ‘X’, the predicted result is most likely the mean of all the outcomes for the random variable and it is known as expected value also known as expectation. The expected value, also known as the expectation, is denoted by: E(X).
Probability Distributions
Understanding probability is necessary to know the probability distributions. In statistics, probability is how the uncertainty of an event is measured. This event can be anything. The most common examples include tossing a coin, rolling a die, or choosing a card. Each of these events has multiple possibilities. Every such possibility is measured with the help of probability. To be more precise, the probability is used for calculating the occurrence of events that may or may not happen. Probability does not give sure results. Unless the probability of any event is 1, the different outcomes may or may not happen in real life, regardless of how less or how more their probability is.
Basic Probability
The simple definition of probability it is a chance of the occurrence of an event. It is defined in numerical form and the probability value is between 0 to 1. The probability value 0 indicates that there is no chance of that event occurring and the probability value 1 indicates that the event will occur. Sum of the probability value must be 1. The probability value is never a negative number. If it happens, then recheck the calculation.
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