Sally lives in City A and works for the department of transportation. She needs to inspect the weigh stations in each of six cities other than City A. In how many ways can she reach each of these cities and return to her home in City A?

Sally lives in City A and works for the department of transportation. She needs to inspect the weigh stations in each of six cities other than City A. In how many ways can she reach each of these cities and return to her home in City A?

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

A middle school has a student to teacher ratio of 15 to 1. This middle school feeds into a high school that currently has 138 students and 7 teachers. If the high school would like to maintain the student to teacher ratio of the middle school, what would they need to do? Fire 9 teachers Fire 2 teachers Hire 2 teachers Fire 5 teachers Hire 9 teachers
Let’s say a psychologist suspects that emotions affect people’s eating habits, but that the eating habits of anxious people are affected differently. Ten highly anxious subjects are randomly divided into two equal-sized groups, one of which views a horror movie while the other watches a comedy. Ten non-anxious control subjects are similarly divided. The number of ounces of popcorn eaten by each subject during the movie is recorded. How many independent variables are there in this design? Name each of the factors and levels (using appropriate descriptors from the paragraph): How many total conditions (groups) are there in this design? Name the dependent variable:
There are three chickens (large, medium, and small). They weighed themselves in different groupings. Below is the information we have: the large chicken plus the medium chicken weigh 10.6 kilograms; the large chicken plus the small chicken weigh 8.5 kilograms; the medium chicken and the small chicken weigh 6.1 kilograms. What is the weight of each chicken? Show how you figured it out.
Laura is planning to buy three 5-lb bags of sugar, six 5-lb bags of flour, three 1-gal cartons of milk, and six 1-dozen cartons of large eggs. The prices of these items in three neighborhood supermarkets are as follows. A = Sugar (5-lb bag) $3.15 $2.99 $3.74 B = Flour (5-lb bag) $3.79 $2.89 $2.98 Supermarket I Supermarket II Supermarket III (a) Write a 3 x 4 matrix A to represent the prices (in dollars) of the items in the three supermarkets. Milk (1-gal carton) $2.99 $2.79 $2.89 C = Eggs (1-dozen carton) $3.49 $3.29 $2.99 (b) Write a 4 x 1 matrix B to represent the quantities of sugar, flour, milk, and eggs that Laura plans to purchase in the three supermarkets. (c) Use matrix multiplication to find a matrix C that represents Laura's total outlay (in dollars) at each supermarket.
Faculty at a certain university need to create a committee to evaluate the general studies curriculum offered on campus. If there are 34 faculty members and they must select a chair, vice chair, secretary and 5 additional faculty members to be on the committee, in how many ways can the committee be formed?
Sally lives in City A and works for the department of transportation. She needs to inspect the weigh stations in each of thirteen cities other than City A. In how many ways can she reach each of these cities and return to her home in City A?
Select the correct number of factors and levels for this study: A researcher would like to test if strategy type affects the time to complete an exam. The researcher assigns 24 student volunteers to one of the following 3 treatment groups: a group that crams for 12 hours before exam, a group that crams for 3 days before exam, and a group that studies for 1 week before the exam. a. 3 factors, 1 level b. 3 factors, 3 levels c. 1 factor, 3 levels d. 1 factor, 1 level
You are given thirteen identical- looking balls and a two-sided scale. One of the balls is of a different weight, although you don't know whether it's lighter or heavier. How can you use just three weighings of the scale to determine the different ball?
Amy has two ways to travel from her home in Norco to her office in Los Angeles. One is to go via the 10 Freeway, and the other is to go via 60 Freeway. In order to determine which way she should travel on a daily basis, Amy has recorded the travel times for samples of eight trips via the 10 Freeway and eight trips via the 60 Freeway. The following table gives the travel times (in minutes) for the sixteen trips: Travel times in minutes 10 Freeway 73, 69, 72, 71, 73, 73, 72, 73 60 Freeway 80, 75, 68, 72, 73, 81, 67, 75 Assume that the two populations of travel times are normally distributed and that the population variances are equal. Can we conclude, at the 0.1 level of significance, that the mean travel times of the two routes are different? Perform a two-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list…
The University of Ballygobackwards has three colleges: the College of Science, which has 15 staff, 5 of whom are female; the College of Engineering, which has 8 staff, 4 of whom are female; and the College of Arts, which has 17 staff, 6 of whom are female. Each college has a Dean, who is chosen from the staff in that college. What is the total number of ways these three Deans can be chosen? Answer: How many ways can three Deans be chosen, so that at least one of them is female? Answer:
A group of 110 people, who lived at varying distances (in kilometers) from the 3 kilometer island nuclear power station, were asked if they thought a full evacuation of the area was required, when it went critical. The researches wanted to know if the opinion to evacuate or not depended on how far from the reactor people lived. The people were divided into 5 categories, based on the distance to the power station. Each person was given 3 choices: evacuation was needed, evacuation was not needed, they did not care about it. Evacuation needed x x x x -.. .-. --. Evacuation not needed X x x X X Do not care X x x X ... You are doing a Chi Square test for independence. Compute the degrees of freedom for this test.
Please please answer super super super fast