A researcher observes the frequency of certain types of vehicles passing through a toll booth during a day: 40 cars, 30 trucks, and 30 motorcycles. If the expected frequencies are 35 cars, 35 trucks, and 30 motorcycles, conduct a chi-square test at the 5% significance level to determine if the observed and expected frequencies differ.

Don't answer without proper knowledge! The average number of accidents at a particular intersection per week is 2. What is the probability that exactly 4 accidents will occur next week?

No Answer! A factory produces parts with a mean length of 20 cm and a standard deviation of 2 cm. What is the probability that a part randomly selected will be between 18 and 22 cm in length?

Skip ! A box contains 5 red balls and 7 green balls. Two balls are drawn one after another without replacement. What is the probability that the first ball is red and the second ball is green?

Can you show me how you do it on excel?

Exam Proctor prio) uncements les ssions One-Way ANOVA The following data represent the Sales (in $1000) data gathered from a marketing efficacy study in Week 2 of December 2019 at a fast-food chain. Each row within each market size is an individual store that was randomly selected for this study. Click this button to reveal the data. Click again to collapse it. Large Medium Small 59.37 64.29 71.86 58.97 66.63 74.81 61.64 62.66 68.13 S 62.5 48.52 62.25 63.95 69.79 79.9 45.58 69.47 72.49 y Resources 66.86 ous Resources 53.02 61.74 53.2 61.83 59.14 60.78 Click Download CSV to download csv file of data. After downloading the file, you must save it as an Excel Workbook. Otherwise, your tables and graphs will not be saved properly. If you want to do well, please avoid using Google sheets. As you work in Excel be sure to save all your work and clearly label your results. If you have a Mac computer, then please watch How to Add the Data Analysis ToolPak in Excel on Mac 2018. If you have a…

Find an SVD of the matrix. 7 2 A=00 44 Give an SVD of matrix A below. A = (Type an exact answer, using radicals as needed.)

Orthogonally diagonalize the matrix, giving an orthogonal matrix P and a diagonal matrix D. To save time, the eigenvalues are 13 and 4. 842 482 2 2 5 Enter the matrices P and D below. (Use a comma to separate matrices as needed. Type an exact answer for each matrix element. Do not factor out a scalar multiple. Do not label the matrices.)

A box contains 10 red, 8 blue, and 12 green balls. If 5 balls are drawn randomly without replacement, what is the probability that exactly 3 of them are red?