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- 3 of adults rate themselves as above average drivers. Complete parts (a) through (c). 5 Use the results from a survey of a simple random sample of 1125 adults. Among the 1125 respondents, 69% rated themselves as above average drivers. We want to test the claim that a. Identify the actual number of respondents who rated themselves as above average drivers. (Round to the nearest whole number as needed.) b. Identify the sample proportion and use the symbol that represents it. (Type an integer a decimal rounded to two decimal places as needed.) c. For the hypothesis test, identify the value used for the population proportion and use the symbol that represents it. (Type an integer a decimal rounded to two decimal places as needed.) (₂)Consider the different contexts: a population, one sample, and a collection of all possible sample means. To distinguish between the three different contexts: (a) What measures the average distance between an observation in a sample of size n and the center of that sample? a.a b. o C.S d. aN(n) (b) What measures the average distance between an observation in a population and the center of that population? a. a b. O C. S d. aN(n) (c) What measures the average distance between a sample mean x and the center of all sample means of the same size n? a. a b. o C. S d. a (n) (d) What measures the average distance between the height of an individual in a population and the mean height of the population? a. a b. o С. S d. av(n)A survey carried out for a supermarket classified customers according to whether their visits to the store are frequent or infrequent and whether they often, sometimes, or never purchase generic products. The accompanying table gives the proportions of people surveyed in each of the six joint classifications. Complete parts (a) through (h). Purchase of Generic Products Frequency of Visit Frequent Infrequent Often Sometimes Never 0.17 0.19 0.39 0.04 0.16 0.05 a. What is the probability that a customer is both a frequent shopper and never purchases generic products? 0.17 (Do not round.) b. What is the probability that a customer who sometimes buys generic products visits the store frequently? (Round to four decimal places as needed.)
- 3. Data on different types of flat fish are showm below. Construct a (relative) irequency table and a bar chart. Flounder Halibut | Turbot | Turbot | Flounder Flounder Turbot Flounder Turbot Sole Sole Turbot Halibut Sole Flounder Turbot Sole Halibut Sole FlounderWhat is a population? What is a sample? What is a population? Choose the correct answer below. O A. A population is a group that exhibits characteristics typical of those possessed by the target sample. B. A population is the set containing all the people or objects whose properties are to be described and analyzed by the data collector. OC. A population is the set of all the properties that can be assigned to any people or objects in a given sample. O D. A population is a set of data. What is a sample? Choose the correct answer below. O A. A sample is a subset or subgroup of the population. OB. A sample is the set of all the properties that can be assigned to any people or objects in a given population. OC. A sample contains one or many populations. D. A sample is obtained in such a way that every element in the population has an equal chance of being selected.Q. Using the data given below answer the questions asked. 56 48 47 42 52 58 42 37 68 40 32 46 45 41 38 34 54 57 61 53 26 45 46 44 50 30 40 56 44 39 21 49 45 51 38 63 39 33 42 37 62 48 43 41 35 43 52 28 54 36 a) Make a frequency distribution of the data with proper number of classes, class limits, class boundaries, midpoints of the classes, frequencies and cumulative frequency columns. b) Make histogram of the data and also draw its frequency polygon. - c) Find Mean, Median, Mode and Quartiles of the data using the frequency distribution.
- A) minor mode b) major mode c) median d) mean10. Draw an ogive of the following distribution. Wage (in Rs): 70-80 80-90 90–100 100–110 110–120 120–130 130–140 No. of workers: 4 6 10 16 12 7 3The numerical measure of a data set that represents the "middle value" which separates the data into two equally sized groups, with the same number of data values below this measure and the same number of data values above this measure, is called the __________ of the data set. A) Mean B) Median C) Mode
- 11. Doing homework A school newspaper article claims that 60% of the students at a large high school completed their assigned homework last week. Assume that this claim is true for the 2000 students at the school. a. Make a bar graph of the population distribution. b. Imagine one possible SRS of size 100 from this population. Sketch a bar graph of the distribution of sample data.1.How many elements are in the provided data set? 2.How many are the variables? 3.How many variables are qualitative – categorical? 4.How many variables are quantitative – discrete? 5.How many variables are quantitative – continuous? What is the data set about? 1.Sorting: Sort the data set according to ID sequence, from smallest to biggest. Following the sorted unique ID number from smallest to biggest, what is the complete data for 100th observation? 2.Filtering: By filtering the ”race” variable, identify the number of a) White students, b) Hispanic, c)African-American and d) Asians; What is the ratio/percentage of Asians to the total population given the data set?22- A section of the population from which information is to be obtained is called __________. a. All b. Target population c. Sample d. Population