A small-town mechanic says that 8% his customers come in for an oil change. When 1000 samples were drawn from his records, it was found that 6.5% of these came in for an oil change. i. What is the target population? ii. Does the value 8% refer to the parameter or to the statistic? iii. Is the value 6.5% a parameter or a statistic?

A small-town mechanic says that 8% his customers come in for an oil change. When 1000 samples were drawn from his records, it was found that 6.5% of these came in for an oil change. i. What is the target population? ii. Does the value 8% refer to the parameter or to the statistic? iii. Is the value 6.5% a parameter or a statistic?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A sales manager recorded the number of sales made by each of the 300 salespeople working athis chain of furniture outlet stores on a Saturday and created the following table.# Sales (bins) Proportion of salespeople in this bin0 – 3 0.053 – 6 0.156 – 9 0.30 9 – 12 0.3512 -15 0.15a. What is the unit of observation in this sample?b. What is the variable collected?c. Draw and label the histogram for this dataset.d. Which is the modal category?e. Calculate the proportion of the salespeople made 9 or more sales.f. Calculate the number of salespeople who made between 0 and 9 sales.
Find the 5 number summary for the data shown 17 21 29 30 36 42 56 60 88 91 94 97 5 number summary:Use the Locator/Percentile method described in your book, not your calculator.
Over the first five years of owning her car, Gina drove about 12,700 miles the first year, 15,478 miles the second year, 12,675 the third year, 11,850 the fourth year, and 13,075 the fifth year. a. Find the mean, median, and mode of this data. b. Explain which measure of central tendency will best predict how many miles Gina will drive in the sixth year. a. mean= 12,700; median= 13,156; no mode; the mean is the best choice because it is representative of the entire data set. b. mean= 13,156; median= 12,700; mode= 3,628; the median is the best choice because it is not skewed by the high outlier. c. mean= 13,156; median= 12,700; no mode; the mean is the best choice because it is representative of the entire data set. d. mean= 13,156; median= 12,700; no mode; the median is the best choice because it is not skewed by the high outlier.
Statistics Question
A class of students took a test. The instructor said that the 75th percentile score was 90 out of 100. What does this mean? A. 90% of the students scored 75 or more on the test. B. 75% of the students scored 90 or more on the test. C. 25% of the students scored 90 or more on the test. D. The high score in the class was (.75)(90).
A poll was conducted on a representative sample of 600 adults living in the United States in order to investigate the decline in cable and satellite TV subscriptions. For this sample, 150 adults revealed that they are "cord cutters," (that is, they canceled their cable/satellite TV service and now only use a video streaming service). You want to estimate p, the true proportion of all US adults who are "cord cutters." Complete parts a through e. Question content area bottom Part 1 a. Find p, the point estimate of p. enter your response here
The table to the right shows data found at a government census website, under a "Did You Know" panel. What type of data source is the information presented here based on? Private Sector Total Employment in a State All 2008 Q2 2009 Q2 Change Female 537,290 517,948 −3.6% Male 504,214 477,491 −5.3% Retail Trade Female 168,942 146,473 −13.3% Male 162,502 144,302 −11.2% Question content area bottom Part 1 Choose the correct answer below. A. The information is the outcome of an experiment that was conducted. B. The information is the result of an observational study that was conducted. C. The information is the result of a survey that was conducted. D. The information is collected via ongoing business activities. E. The information is distributed by an organization or individual.
Miss Rose teaches three ballet classes. Her students' data are shown in the relative frequency table. Beglnner Intermediate Advanced Total Вoys 0.15 0.2 0.05 0.4 Girls 0.1 0.35 0.15 0.6 Total 0.25 0.55 0.2 1.0 Which statement is true?
Find the test statistic for a proportion "p" given the following information. Malloree ordered 15 pair of shoes online during the stay-at-home order, and 2 pairs arrived with mismatched sizes. Looking on line, she found that the retailer claimed that this happened 4% of the time with online orders.
According to a census company. 7 1% of all bables bom are of low birth weight. An obstetrician wanted to know whether mothers between the ages of 35 and 39 years give birth to a higher percentage of low-birth-weight babies. She randomly selected 240 births for which the mother was 35 to 39 years old and found 28 low-birth-weight bables. Complete parts (a) through (c) below. (a) lf the proportion of low-birth-welght babies for mothers in this age group is 0.071, compute the expected number of low-birth-weight births to 35- to 39-year-old mothers. What is the expected number of births to mothers 35 to 39 years old that are not low birth weight? The expected number of low birth-weight births to 35- to 39-year-old mothers is The expected number of births to mothers 35 to 39 years old that are not low birth weight is (Type integers o decimals)
Consider a sample data set with the summary statistics s= 112, Q = 58, and Q, =203. %3D a. Calculate IQR. b. Calculate IQR/s. c. Is the value of IQR/s approximately equal to 1.3? What does this imply? a. IQR =
Papa's Italian Restaurant has collected data about customer sauce orders. It calculated that P(marinara) = 0.74, P(pesto) = 0.62, and P(marinara or pesto) = 0.93. Determine P(marinara and pesto). 0.46 0.43 0.19 0.31