Homework Answers
Question 1).
A population contain all the elements of the set of data or in research population are all the peope who are within the scope of our set of characteristics whereas a sample is the derived part (or subset) of the population.
Now in this case our scope of study is college students in US. Therefore our population is "All college students in the US" whereas our sample is 1000 selected students for our study.
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QUESTION 1 College students Suppose a recent study of 1,000 college students in the U.S. found...
Suppose that at a particular college, a random sample found that 25 out of 100 students...
Suppose that at a particular college, a random sample found that 25 out of 100 students who use the internet use Twitter. Does this provide evidence that the true proportion of students at this college who use Twitter is higher than the nationally stated 15%? Use a significance level of 0.05 and the p-value to give your decision. The correct hypotheses to use are: Ho: p = 0.15 HA: p > 0.15 Blank #1: Report the test statistic to two...
A recent study found that 43% of college students engage in binge drinking (5 drinks at...
A recent study found that 43% of college students engage in binge drinking (5 drinks at a sitting for men, 4 for women). After hearing of the result, a professor surveyed a random sample of 295 students at his college and found that 115 admitted to binge drinking in the last week. Should he be surprised at this result? Explain Select the correct choice below and fill in the answer box to complete your choice (Round to three decimal places...
A recent study found that 41% of college students engage in binge drinking (5 drinks at...
A recent study found that 41% of college students engage in binge drinking (5 drinks at a sitting for men, 4 for women). After hearing of the result, a professor surveyed a random sample of 244 students at his college and found that 92 admitted to binge drinking in the last week. Should he be surprised at this result? Explain. Select the correct choice below and fill in the answer box to complete your choice. (Round to three decimal places...
QUESTION 4 in a survey at a local college 10 of students reported that they do...
QUESTION 4 in a survey at a local college 10 of students reported that they do not own a mobile device with internet capabilities. If 20 students are selected at random find the probability that exactly 5 students dont own a mobile device with internet capabilities 0.01 0.05 0.00 0.15
Question 11 A group of 41 college students from a certain liberal arts college were Type...
Question 11 A group of 41 college students from a certain liberal arts college were Type numbers in the boxes. randomly sampled and asked about the number of alcoholic drinks they have 10 points in a typical week. The purpose of this study was to compare the drinking habits of the students at the college to the drinking habits of college students in general. In particular, the dean of students, who initiated this study, would like to check whether the...
Question 11 A group of 50 college students from a certain liberal arts college were Type...
Question 11 A group of 50 college students from a certain liberal arts college were Type numbers in the boxes. randomly sampled and asked about the number of alcoholic drinks they have 10 points in a typical week. The purpose of this study was to compare the drinking habits of the students at the college to the drinking habits of college students in general. In particular, the dean of students, who initiated this study, would like to check whether the...
Please read the following prompt carefully: "A study found that 34% of college students text while...
Please read the following prompt carefully: "A study found that 34% of college students text while driving. A recent survey found that 353 of 900 randomly selected college students had texted while driving. Based on these findings, does the sample evidence suggest that the proportion of college students who text while driving is greater than 34%? Use the a=0.005 level of significance." Determine the following values by rounding to the nearest indicated decimal place. Please type your solution in the...
(8 points) A statistics student at a small liberal arts college who is curious about the...
(8 points) A statistics student at a small liberal arts college who is curious about the relationship between the amount of time students at his college spend on social networking sites and their performance at school decides to conduct a survey. Four research strategies for collecting data are described below. In each, name the sampling method proposed and any bias you might expect. Strategy 1: He obtains a list of the 1500 students at the college. He chooses a random...
Question 11 Type numbers in the boxes. A group of 43 college students from a certain...
Question 11 Type numbers in the boxes. A group of 43 college students from a certain liberal arts college were randomly sampled and asked about the number of alcoholic drinks they have 10 points in a typical week. The purpose of this study was to compare the drinking habits of the students at the college to the drinking habits of college students in general. In particular, the dean of students, who initiated this study, would like to check whether the...
Based on a recent study, roughly 80% of college students in the U.S. own a smartphone. Is the proportion of smartphone o...
Based on a recent study, roughly 80% of college students in the U.S. own a smartphone. Is the proportion of smartphone owners lower at this university? Proportion of students who have a smartphone 78% (243 students) students with no smartphone 21% (67 students) State your hypotheses in symbolic form and in words. use a normal model to estimate the P-value probability. Verify that normality conditions are met. conduct the hypothesis test. Give your P-value and interpret its meaning as a...
Suppose that at a particular college, a random sample found that 25 out of 100 students who use the internet use Twitter. Does this provide evidence that the true proportion of students at this college who use Twitter is higher than the nationally stated 15%? Use a significance level of 0.05 and the p-value to give your decision. The correct hypotheses to use are: Ho: p = 0.15 HA: p > 0.15 Blank #1: Report the test statistic to two...
A recent study found that 43% of college students engage in binge drinking (5 drinks at a sitting for men, 4 for women). After hearing of the result, a professor surveyed a random sample of 295 students at his college and found that 115 admitted to binge drinking in the last week. Should he be surprised at this result? Explain Select the correct choice below and fill in the answer box to complete your choice (Round to three decimal places...
A recent study found that 41% of college students engage in binge drinking (5 drinks at a sitting for men, 4 for women). After hearing of the result, a professor surveyed a random sample of 244 students at his college and found that 92 admitted to binge drinking in the last week. Should he be surprised at this result? Explain. Select the correct choice below and fill in the answer box to complete your choice. (Round to three decimal places...
QUESTION 4 in a survey at a local college 10 of students reported that they do not own a mobile device with internet capabilities. If 20 students are selected at random find the probability that exactly 5 students dont own a mobile device with internet capabilities 0.01 0.05 0.00 0.15
Question 11 A group of 41 college students from a certain liberal arts college were Type numbers in the boxes. randomly sampled and asked about the number of alcoholic drinks they have 10 points in a typical week. The purpose of this study was to compare the drinking habits of the students at the college to the drinking habits of college students in general. In particular, the dean of students, who initiated this study, would like to check whether the...
Question 11 A group of 50 college students from a certain liberal arts college were Type numbers in the boxes. randomly sampled and asked about the number of alcoholic drinks they have 10 points in a typical week. The purpose of this study was to compare the drinking habits of the students at the college to the drinking habits of college students in general. In particular, the dean of students, who initiated this study, would like to check whether the...
Please read the following prompt carefully: "A study found that 34% of college students text while driving. A recent survey found that 353 of 900 randomly selected college students had texted while driving. Based on these findings, does the sample evidence suggest that the proportion of college students who text while driving is greater than 34%? Use the a=0.005 level of significance." Determine the following values by rounding to the nearest indicated decimal place. Please type your solution in the...
Question 11 Type numbers in the boxes. A group of 43 college students from a certain liberal arts college were randomly sampled and asked about the number of alcoholic drinks they have 10 points in a typical week. The purpose of this study was to compare the drinking habits of the students at the college to the drinking habits of college students in general. In particular, the dean of students, who initiated this study, would like to check whether the...
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