Question

In: Computer Science

Did you vote? Did you vote? Age Group Yes No 18-24 18 62 25-34 39 76...

Did you vote? Did you vote?
Age Group Yes No
18-24 18 62
25-34 39 76
35-44 64 76
45-54 54 46
55 and older 82 43

A survey was conducted to determine by age group the number of registered voters who cast ballots during the recent elections. The table above was the data recorded.

a. Using α = 0.01, perform a chi-square test to determine if the proportion of voters who cast ballots during the elections differs among the five groups of voters.

b. Determine the p-value using Excel (and Table 8 of Appendix A, page 861) and interpret its meaning.

c. Confirm your results using PhStat.

d. How does age appear to relate to the likelihood that a voter will cast a ballot during the elections?  

Solutions

Expert Solution


Related Solutions

According to a government study among adults in the 25 0 to 34-year age group, the...
According to a government study among adults in the 25 0 to 34-year age group, the mean amount spent per year on reading and entertainment is $2,035. Assume that the distribution of the amounts spent follows the normal distribution with a standard deviation of $601. a) a) What percent of the adults spend more than $2,475 per year on reading and entertainment? b) b) What percent spend between $2,475 and $3,150 per year on reading and entertainment? c)   What percent spend...
For drivers in the 20-24 age bucket, there is a 34% rate of car accidents in...
For drivers in the 20-24 age bucket, there is a 34% rate of car accidents in one year. An insurance investigation finds that in a group of 500 randomly selected drivers aged 20-24 living in New York, 42% had accidents in the last year. a. Assuming the same 34% rate applies, find the mean and standard deviation for the number of people in groups of 500 that can be expected to have accidents. b. How many drivers in the New...
1. Make a box-plot for the following data: 34 36 39 43 51 53 62 63...
1. Make a box-plot for the following data: 34 36 39 43 51 53 62 63 73 79 2. The blood pressure of 40 women have a mean of 110.8 mm hg and a standard deviation of 17.1 mm hg. Is a measurement of 181 mm hg unusual?
If you start contributing to your retirement account at the age of 18 with $25 a...
If you start contributing to your retirement account at the age of 18 with $25 a month and you increase your contributions by $5 each year, how much will you be contributing a month at the age of 40?
You are a US senator deciding whether to vote yes or no on new legislation. The...
You are a US senator deciding whether to vote yes or no on new legislation. The potential new law places restrictions on the practice of outsourcing work to low-wage countries and is designed to protect US workers’ jobs. These days it is increasingly common for companies to promise manufacturing contracts to overseas suppliers in exchange for access to that country’s market. Labor union representatives at home argue that these kinds of deals cost jobs as factories close and parts are...
LBW No Yes total Race White 76 20 96 Black 14 12 26 Other 43 24...
LBW No Yes total Race White 76 20 96 Black 14 12 26 Other 43 24 67 Referring again to the table above of LBW by Race, we want to know if the proportion of LBW births to black women is significantly different from the proportion of LBW births to women of race “other”, based on an α=0.05 test. Is this question calling for a 2-sided test? (yes or no) [a] What is the test statistic, based on the normal...
"Hit" Group "Smashed Into" Group 25 50 25 45 34 55 30 40 36 45 37...
"Hit" Group "Smashed Into" Group 25 50 25 45 34 55 30 40 36 45 37 41 31 50 35 35 30 37 35 45 30 55 25 50 20 45 25 43 30 42 24 40 34 36 33 45 37 50 38 41 A. Null Hypothesis? Ha: Smashed into group estimated higher speed than hit group Ho: Smashed into group estimated lower or same speed than hit group(directional hypothesis) B. Alternative hypothesis? Ha: Smashed into group estimated higher...
4. Data (Xi) : 10 12 14 15 17 18 18 24 30 62 71...90 Find...
4. Data (Xi) : 10 12 14 15 17 18 18 24 30 62 71...90 Find the Z distribution. Find the Normal probability plot. Conclusions is the Z distribution Skewed.
Person Did I offer them the s'mores drink Whether they said yes or no Age of...
Person Did I offer them the s'mores drink Whether they said yes or no Age of person Person 1 Yes (Heads) No 26 Person 2 No (Tails) N/A N/A Person 3 Yes (Heads) No 42 Person 4 No (Tails) N/A N/A Person 5 No (Tails) N/A N/A Person 6 Yes (Heads) Yes 13 Person 7 Yes (Heads) Yes 13 Person 8 Yes (Heads) No 72 Person 9 Yes (Heads) Yes 39 Person 10 Yes (Heads) No 26 Person 11 No...
Choose a young adult (age 25 to 34 years) at random. The probability is 0.11 that...
Choose a young adult (age 25 to 34 years) at random. The probability is 0.11 that the person chosen did not complete high school, 0.34 that the person has a high school diploma but no further education, and 0.24 that the person has at least a bachelor What must be the probability that a randomly chosen young adult has some education beyond high school but does not have a bachelor's degree? (b) What is the probability that a randomly chosen...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT