Classify the study as either descriptive or inferential. Explain your answer. Data from a sample of citizens of a certain country yielded the following estimates of average TV viewing time per month for all citizens 2 years old and older. The imes are in hours and minutes; Q1 stands for first quarter. Wiewing method Q1 2011 Q1 2010 Change (%) 158:14 Watching TV in the home 158:41 0.3 Watching timeshifted TV 10:16 9:07 12.6 DVR playback 26:34 25:44 25:27 25:59 Using the Internet on a computer Watching video on Internet 4:23 3:58 4:36 3:38 Mobile subscribers watching video on a mobile phone (...) Is the study descriptive or inferential? OA. The study is inferential, because the statistics are used to describe the sample. QB. The study is inferential, because the statistics are used to make an inference about the population. 3.2 -2.1 10.5 26.6
Q: A survey was conducted two years ago asking college students their top motivations for using a…
A: The categorical variable is response. It has 5 categories. We have to test whether there has been a…
Q: What percent of the department faculty have less than 25 years of service? Answer: % (b) If a…
A: From the given histogram we need to answer certain questions.
Q: The table to the right shows data found at a government census website, under a "Did All You Know"…
A: the correct answer would be:B. The information is distributed by an organization or individual.
Q: Use t-test to determine if the new method of teaching science is more effective than the traditional…
A:
Q: The owner of Showtime Movie Theaters, Inc., would like to predict weekly gross revenue as a function…
A: Given information: The data represents the values of the variables weekly gross revenue, television…
Q: An auto shop wants to examine the proportion of customers that have to return after an appointment.…
A:
Q: Researchers watched groups of dolphins to determine what activities the dolphins partake in at…
A:
Q: The ages 1:00 pm and 1:15 pm are given. the 80th percentile? 5, 8, 10, 15, 16, 17, 18, 21, 25
A: We have given that, The data set are, 5, 8, 10, 15, 16, 17, 18, 21, 25 Then, We will find the…
Q: A survey was conducted two years ago asking college students their top motivations for using a…
A: Given data, Response Old survey New survey frequency Rewards 0.27 112 Low rates 0.23 97…
Q: A searcher is interested in if there is a relationship between whether a student enjoys mathematics…
A: Given: α=0.025 The observed values are given as Maths: Yes Maths: No Total Stats: Yes 70 49…
Q: Many athletes (and their parents) worry about the risk of concussions when playing sports. A…
A: First let us sort the head circumferences (in inches) for the players on the team; No. Head…
Q: Which technique for gathering data (observational study or experiment) do you think was used in the…
A: According to the U.S. Census Bureau, the % of population that was 15 years old or younger was 44.4%…
Q: Hi I am having difficulty answering this problem and need help, thank you.
A: Hey, since there are subpart questions posted, we will answer first three parts. If you want any…
Q: A auto shop wants to examine the proportion of customers that have to return after an appointment.…
A: Given information- We have given that an Auto shop wants to examine the proportion of customers that…
Q: Question Rebecca collected data from a random sample of 500 homeowners in her state asking whether…
A: Rebecca collected data from a random sample of 500 homeowners in her state asking whether or not…
Q: Claim: Most adults would erase all of their personal information online if they could. A software…
A: It is given that:
Q: In a survey, people were asked how many times per year they had their car in the shop for repairs.…
A: From the provided information, Shop Frequency 0 84 1 83 2 35 3 53
Q: Fear of the dark is quite common among children. However, what about adults? One polling agency…
A: From the provided information, Sample size (n) = 389 18% indeed leave the light on when going to…
Q: Are our kids getting taller? The average height of kindergartners in 1950 was 39.5 in. The data…
A: From the given information, The average height of kindergartens in 1950 was 39.5. The sample data is…
Q: In a fishing lodge brochure, the lodge advertises that 75% of its guests catch northern pike over 20…
A: Single proportion test
Q: Item 3 (Large-sample test about the proportion) Use Critical Value Method by showing the steps and…
A: Given : P(popu. prop.)=68.6%=0.686 x(respondents who owned their homes)=92 n(sample size)=150…
Q: The boxplot below shows salaries for CPAS and Actuaries in a town. CPA HO Actuary 30 40 50 60 70…
A:
Q: In a recent year, the Better Business Bureau settled 75% of complaints they received. (Source: USA…
A: According to central limit theorem, if the sample size n is large enough such that np≥15 and…
Q: Which percentile would be used to find the multiplier for 60% confidence? Select one: a. 20th…
A: Given find the multiplier for 60% confidence
Q: oes this indicate that the proportion of customers of this brand of soap has increased, at the .1…
A: Given : n=400 , X=92 , p0=0.20 , α=0.1 We want to test that the proportion of customers of this…
Q: For a certain survey, software reports the results shown below for responses on the number of times…
A: Given that, Sample size (n) = 240 Mean = 4.4 Standard deviation = 2.9
Q: The correct answer to this problem is 0.15 or 15%. Where did I go wrong in my calculation? Would you…
A: GivenP(red) = 0.25P(red and bad) = 0.10 The method what you did is incorrect as it probability of…
Q: The data in the accompanying table represent the heights and weights of a random sample of…
A: The data table provided in the question is as follows : Height Weight 75 227 75 195 72 180…
Q: If you are unsure of what effect size to use when calculating the sample size, what is considered…
A: Given: Effect size is used to determine how meaningful the relationship between the variables or the…
Q: Find the average?
A: We have given that a sample data of sample size n=5. The data is: 70, 60, 50, 42.5, 41. Average(…
Q: what range of raw scores makes up the middle 40%
A: The middle 40% means, the scores lie between 30th and 70th percentile. From stand normal, z-score…
Q: Which of the following is the correct way of stating the null hypothesis of the given problem?
A: Test is that whether there is a relationship between the post-test scores of students in Algebra and…
Q: Researchers watched groups of dolphins to determine what activities the dolphins partake in at…
A: Given Information: The observed values are, Activity Period Total Morning Noon Afternoon…
Q: lecture(12.3): A statistics class is made up 32% in person learners and has 24 in person learners.…
A:
Q: Can you help me solve this using R? 2. Recall the Going Wireless data first mentioned Week 2 of…
A: >…
Q: What is an appropriate summary statistic for the variable Story? WorldGross Budget Profitability…
A: As the variable 'story' is a nominal data set.
Q: Using this data, how would you find a 95% prediction interval for the number of programs in year 11?
A: The formula of the prediction interval is,With the degrees of freedom is,
Q: Old Survey % New Survey Frequency, fe A survey was conducted two years ago asking college students…
A:
Q: The authors of a paper randomly selected two samples of patients admitted to the hospital after…
A: The answer is attached below.
Q: A company tested anti-virus drug to test its effectiveness before releasing into the market. Use the…
A: Given that Significance level =0.05 Treatments and Symptoms We have to conduct hypothesis testing…
Q: A study was done to look at the relationship between number of lovers college students have had in…
A: The table below shows the required calculations- Lovers (x) GPA (y) x2 y2 xy 4 2.7 16 7.29…
Q: The following refer to the following data set: 118.8 115.2 113.4 137.5 101.6 93.8 137.5 120.6 137.5…
A: Answer:-----. Date:----11/10/2021
Q: t is assumed that the proportion of households that have three telephone numbers is 30%. A company…
A: Given : It is assumed that the proportion of households that have three telephone no. is 30% i.e p =…
Q: Sunspot Numbers Listed below in order by row are annual sunspot numbers beginning with 1980. Is the…
A: Solution: Enter the data in Excel. The scatter plot is obtained by using excel. Procedure: Select…
Q: A study surveys students to determine the amount of Facebook use during the time they are doing Math…
A: H0:There is no difference between the groupsH1:There is atleast one difference between the groups.…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- ork Question Part 1 of 5 Cans of soda vary slightly in weight. Given below are the measured weights of seven cans, in pounds. Find the mean and median of these weights. Which, if any, of these weights would be considered an outlier? What are the mean and median weights if the outlier is excluded? 0.8161 0.8194 0.8165 0.8174 0.7903 0.8141 0.8127 Find the mean and median of the weights. The mean is (Round to five decimal places as needed.) PPrisons 2006 A report from the U.S. Department ofJustice (www.ojp.usdoj.gov/bjs/) reported the percentchanges in federal prison populations in 21 northeasternand midwestern states during 2006. Using appropriategraphical displays and summary statistics, write a reporton the changes in prison populations.Researchers watched groups of dolphins to determine what activities the dolphins partake in at certain times of the day. The numbers in the table represent the number of groups of dolphins that were partaking in an activity at certain times of days. Is there enough evidence to show that the activity and the time period are dependent for dolphins? Test at the 5% level. Dolphin Activity Period Activity Morning Noon Afternoon Evening Total Travel 19 13 14 15 61 Feed 20 14 54 118 Social 15 13 52 109 Total 78 48 41 121 288 State the hypotheses. Ho: Activity and the time period are Select an answer Ha: Activity and the time period are Select an answer Calculate the test statistic. Round your answer to three decimal places. x² = Calculate the p-value. Round your answer to four decimal places. p-value= State your decision. Since p-value? 0.05, Select an answer Ho. Interpret your decision in the context of the problem. At the 5% level of significance, there Select an answer enough evidence to…
- A survey was conducted two years ago asking college students their top motivations for using a credit card. You think this distribution has changed. You randomly select 425 college students and ask each one what the top motivation is for using a credit card. Can you conclude that there has been a change in the distribution? Use a = 0.025. Complete parts (a) through (d). Response Old Survey % 29% New Survey Frequency, f Rewards 110 Low rates Cash back Discounts 23% 96 21% 109 7% 46 Other 20% 64 O B. The distribution of motivations is 110 rewards, 96 low rate, 109 cash back, 46 discounts, and 64 other. O C. The distribution of motivations is 29% rewards, 23% low rate, 21% cash back, 7% discounts, and 20% other. Which hypothesis is the claim? o Ho (b) Determine the critical value, Yo, and the rejection region. X = 11.143 (Round to three decimal places as needed.) Choose the correct rejection region below. Oc. XReview this chart. Identify what type of figure/chart is presented and briefly explain what each chart is reporting.How do I answer/ start this? Which test do I use?The boxplot below shows salaries for CPAS and Actuaries in a town. CPA Actuary 30 40 50 60 70 80 90 100 110 120 Salary (thousands of $) Q If a person is making the third quartile salary for a CPA, his earning is equivalent to the Select an answer salary for an Actuaries, and he is making less than % of Actuaries. ✓ Select an answer Question Help:Written Example Message instructor Submit Question median first quartile third quartile maximum minimumEspañol A decade-old study found that the proportion, p, of high school seniors who believed that "getting rich" was an important personal goal was 80%. A researcher decides to test whether or not that percentage still stands. He finds that, among the 240 high school seniors in his random sample, 185 believe that "getting rich" is an important goal. Can he conclude, at the 0.10 level of significance, that the proportion has indeed changed? Perform a two-tailed test. Then complete the parts below. SEE Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) 00 (a) State the null hypothesis H, and the alternative hypothesis H,. H, :0 H :0 (b) Determine the type of test statistic to use. O=0 OSO O20 (Choose one) (c) Find the value of the test statistic. (Round to three or more decimal places.) OCurrent Attempt in Progress The USStates dataset, used throughout the textbook, contains information on the 50 US states. A small segment from the dataset is displayed in the following table State 1 California Colorado Connecticut Save for Later Percent of Residents with a College Degree 34.5 39.6 42.7 What variable was used to determine that 42.7% of Connecticut state residents have a college degree? Is it categorical or quantitative? O Variable what state they are from. This is a categorical variable. O Variable what state they are from. This is a quantitative variable. O Variable O Variable whether or not they have a college degree. This is a categorical variable. whether or not they have a college degree. This is a quantitative variable. Attempts DoffriredUse the output provided in the formula sheets folder. In testing if the reduced model is useful, the F statistic is Fcal = 13.58. What would be the critical value from the F table that we would compare this against? O 3.86 O 4.74 O 19.4 O 4.93Using this data, how would you find a 95% prediction interval for the number of programs in year 11?need help with part d and eSEE MORE QUESTIONSRecommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th…StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C…StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage LearningElementary Statistics: Picturing the World (7th E…StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. FreemanMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th…StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C…StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage LearningElementary Statistics: Picturing the World (7th E…StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman