(i) What is the modal age group? (ii) How many people took part in the survey? (iii) Find an estimate for the mean age that a person first met their partner.
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- How was the following relative frequency answers on the bottom left corner found from the data table on the upper right corner?The responses to the question “How many meals do you eat meat per month?” from a previous years yielded the following data: 0, 3, 4, 10, 10, 10, 15, 15, 16, 18, 20, 20, 20, 20, 25, 25, 27, 28, 30, 40, 40, 45, 50, 50, 55, 60, 70, 80, 83 Use 6 classes beginning with a lower class limit of 0 and class width of 14. Construct a frequency distribution table and the corresponding histogram. Do not forget the axis titles.D A school is tracking its freshmen attendance for the first marking period. Shown below is a table summarizing their findings for the 284 members of the freshmen class. (a) Find the mean and median number of days absent. Round your mean to the nearest tenth. (b) What is the population standard deviation for this data set? Round to the nearest tenth. (c) What proportion of the population that has an absenteeism greater than 4 days? Days Absent Number of Students (x) (fi) 0 158 1 64 2 18 3 22 4 4 5 7 6 8 9 2 13 1
- The following are the ages (in years) of all eight employees of a small company: 53 32 61 27 39 44 49 57 Find the mean age of these employees.Serial Killers: Everything Up to One-Way Between-Groups ANOVA What analysis could be used to see if there are significant differences in the mean numbers of victims of serial killers in Austrailia, Canada, the United States, and the United Kingdom? one-way between-groups ANOVA In which of the following four categories does this situation fall? nominal independent variables, scale dependent variable How many nominal independent variables are there? a. one nominal variable b. two nominal variablesWomen stereotypically talk more than men do and researchers wondered how much more. Suppose a study attempted to determine the difference in the mean number of words spoken by men or women per day. The results of the study are summarized in the table. Group Populationmean Samplesize Samplemean Sample standarddeviation Standard errorestimate women ?w (unknown) ?w= 36 ?⎯⎯⎯w= 14704 ?w=6215 SEw=1036 men ?m (unknown) ?m= 24 ?⎯⎯⎯m= 15022 ?m=7864 SEm=1605 df=41.4224 Assume the conditions are satisfied for a two‑sample ?‑confidence interval. First, determine the positive critical value, ?, for a 95% confidence interval to estimate how many more words women speak each day on average compared to men, ?w−?m. Give your answer precise to at least three decimal places. Determine lower and upper limits of a 95% confidence interval for how many more words speak each day on average compared to men. A negative number would indicate how many fewer words women speak each day on average…
- A university placement office sent a questionnaire to a sample of business graduates requesting information on monthly salaries. The following data shows the monthly salary (in thousands) of 11 graduates. 28, 35, 48, 20, 40, 40, 22, 19, 60, 55, 10 Calculate (i) the arithmetic mean, (ii) the geometric mean, (iii) the median and (iv) the mode.A survey was developed to estimate the average number of hours per week that adults spend exercising. Every third person entering a large fitness complex was surveyed, with a total of 2,500 people being surveyed. The data showed that the mean number of hours spent exercising was 3.2 hours per week. Which characteristic of the survey could create a bias in the results? The size of the sample The size of the sample The method of analyzing the data The method of analyzing the data The method of choosing the people who were surveyed The method of choosing the people who were surveyed The size of the populationFor the month of April, a checking account has a balance of $563 for 25 days, $2498 for 1 day, and $297 for 4days. What is the account's mean daily balance for April? The account's mean daily balance for April is approximately $___
- Survey was conducted about real estate prices. Data collected is 183237, 273290, 394891, 471556, 505379, 636091, 779283, 895021, 966565, 1012251, 1193014, 1212547, 1359408. What is the 85th percentile price?What is the percentile for your 10th data point? (when they are arranged in order) Number of Frogs Caught Daily Next to my House 29 23 14 13 23 22 16 24 27 25 26 19 21 19 25Explain the meaning of the accompanying percentiles. (a) The 5th percentile of the head circumference of males 3 to 5 months of age in a certain city is 41.5 cm. (b) The 95th percentile of the waist circumference of females 2 years of age in a certain city is 49.8 cm. (c) Anthropometry involves the measurement of the human body. One goal of these measurements is to assess how body measurements may be changing over time. The following table represents the standing height of males aged 20 years or older for various age groups in a certain city in 2015. Based on the percentile measurements of the different age groups, what might you conclude?
