by ella | Feb 26, 2025 | Statistics
Web Calculator Exercise 3 T test for independent groups and dependent groups (Two-group designs) 1. An LU professor is interested in whether there is a difference between undergraduate students and graduate students in the amount of time spent praying each day. The...
by ella | Feb 26, 2025 | Statistics
Web Calculator Exercise 2 Z test & One sample t-test 1. A researcher is interested in whether students who attend private high schools have higher average SAT Scores than students in the general population. A random sample of 90 students at a private high school...
by ella | Feb 26, 2025 | Statistics
Corporate Finance, 2e (Berk/DeMarzo) Chapter 6 Investment Decision Rules 6.1 NPV and Stand-Alone Projects 1) Which of the following statements is false? A) About 75% of firms surveyed used the NPV rule for making investment decisions. B) If you are unsure of your cost...
by ella | Feb 26, 2025 | Statistics
Quiz 2 Numerical descriptive statistics and sampling 1. The following marks are the test 1 marks for 10 randomly selected STA100 students: 67, 34, 98, 78, 76, 55, 80, 49, 91, 66. What is the mean mark for this sample? a. 69.1 b. 69.4 c. 62.2 d. 70.3 e. 71.5 2. The...
by ella | Feb 26, 2025 | Statistics
A recent study by Allstate Insurance Co. finds that 82% of teenagers have used cell phones while driving (The Wall Street Journal, May 5, 2010). In October 2010, Massachusetts enacted a law that forbids cell phone use by drivers under the age of 18. A policy analyst...
by ella | Feb 26, 2025 | Statistics
Karen wants to compare using the cost plus method to the percentage markup method. If she sells 2 small rice pads, 4 medium rice pads,2 large rice pads, and 20 boxes of $3.50 tea in a month, how much profit does she accumulate? What markup percentage based on...
