a survey examining health-related behaviors among university students, 200 participants were asked to report how many cigarettes they smoke per day. The results were as follows: Cigarettes per day Number of participants 0 145 2 25 5 20 10 10 What is the variance of this sample? a. 11.25 b. 9.5 c. 5.75 d. 6.44

a survey examining health-related behaviors among university students, 200 participants were asked to report how many cigarettes they smoke per day. The results were as follows: Cigarettes per day Number of participants 0 145 2 25 5 20 10 10 What is the variance of this sample? a. 11.25 b. 9.5 c. 5.75 d. 6.44

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

The following set of data is from a sample of n=7. 5 3 8 4 9 3 10 a. Compute the mean, median, and mode. b. Compute the range, variance, standard deviation, and coefficient of variation. c. Compute the Z scores. Are there any outliers? d. Describe the shape of the data set.
1. Consider a sample with data values of 2.20; 1.98; 1.95; 2.27; 2.25; 2,24; 2.31 Compute the mean.
Find the variance and standard deviation of the following sample. 0 -5 -3 6 4 -4 1 -5 0 3
Given the following dataset of the price of a gallon of gas: $2.85; $3.06; and $2.99. Calculate the sample variance. The sample variance, rounded off as instructed, is:
Consider the following two sample data sets. Set 1: 7 5 3 8 9 Set 2: 8 13 14 2 5 a. Calculate the coefficient of variation for each data set. b. Which data set has less consistency (or more variability)?
Below is a table showing the weights of packages arriving at a post office during a day. Weight (kg) frequency 130 15 200 25 250 35 200 45 150 55 120 Find the sample variance. a. 493.06 O b. 351.68 O c. 288.88 O d. 293.06 O e. 28.8 LO LO
Given the following frequency table, the 10. sample Variance (S ) is 3 4 1. 12 13 15 10
The variance for the sample of student marks given in following table is: number marks of student 1-5 2. 6-10 3 11-15 6. 16-20 10 21-25 4. Total 25 Select one: a. 33.5 b. 19 O C. 24.12 d. 32.16
For the following scores from a sample: a. Compute the mean, median and mode for the scores. b. Compute the SS, variance and SD. X f 7 1 6 2 5 2 4 2 3 1 MacBook Air
QUESTION 4 Find the median for the given sample data. The number of vehicles passing through a bank drive- up line during each 15- minute period was recorded. The results are shown below. Find the median number of vehicles going through the line in a fifteen- minute period. 20 22 20 23 23 20 25 22 30 26 26 24 19 26 20 15 10 22 22 22 O 23 22 26 O 21.85 QUESTION 5 Construct a boxplot for the given data. Include values of the 5 -number summary in all boxplots. The weights (in pounds) of 30 newborm babies are listed below. Construct a boxplot for the data set. 5.55.758 5.9 6.1 6.1 63 646.5 6.6 676767K070707.0717272 Save A thmit Click Saue All Answers to save all answers.
Consider the following data and corresponding weights. Weight( w; ) 3.4 3.0 3.5 1 2.0 a. Compute the weighted mean (to 3 decimals). b. Compute the sample mean of the four data values without weighting (to 3 decimals).
The sample mean is the point estimator of а. O b. o О с. р С. O d. H