A recent Gallup Poll asked 1523 adults if they bought a lottery ticket in the past year. Eight hundred sixty-eight (868) of the adults said "Yes." The poll was carried out by telephone, so people without phones were excluded from the sample.
Provide the sample proportion, p hat, used to estimate the population proportion p of all adults who bought a lottery ticket
(d) The value used to estimate the proportionp
of all adults who bought a lottery ticket in the past year is called a?
(e) Find a 90% confidence interval for the population proportionp of all adults who bought a lottery ticket in the past year.
A recent Gallup Poll asked 1523 adults if they bought a lottery ticket in the past year. Eight hundred sixty-eight (868) of the adults said "Yes." The poll was carried out by telephone, so people without phones were excluded from the sample.
(a) Select the best answer to the question: Any errors in the final result due to excluding people without phones:
A) Are included in the announced margin of error.
B) Can be ignored, because these people are not part of the population.
C) Are in addition to the announced margin of error.
D) Can be ignored, because this is a nonsampling error.
Selection:
(b) The _____________ that is estimated in this survey is the proportionp of all adults who bought a lottery ticket.
A) Mean
B) Confidence Interval
C) Parameter
D) Statistic
Selection:
(c) Provide the sample proportion, p hat, used to estimate the population proportionp of all adults who bought a lottery ticket.
(d) The value used to estimate the proportionp of all adults who bought a lottery ticket in the past year is called a __________.
A) Parameter
B) Statistic
C) Confidence Interval
D) Mean
Selection:
(e) Find a 90% confidence interval for the population proportionp of all adults who bought a lottery ticket in the past year.
(f) Write a sentence interpreting your 90% confidence interval in the context of this problem.