Required Resources Read/review the following resources for this activity: Textbook: Chapter 8 Lesson Scenario/Summary You will complete a Course Project in this course that will span two weeks. The final […]

Question The owner of a restaurant is reviewing customer complaints. In a random sample of 227 complaints, 57 complaints were about the slow speed of the service. Create a 95% confidence interval for the proportion of […]

Question Alice wants to estimate the percentage of people who plan on voting yes for the upcoming school levy. She surveys 380 individuals and finds that 260 plan on voting yes. What is the […]

Question Suppose that the number of dollars spent per week on groceries are normally distributed with an unknown mean and standard deviation. A random sample of 18 grocery bills is taken and […]

Question In a recent survey, a random sample of 1,625 people shopping for a new car were asked whether they would pay the sticker price for the car. 926 reported that they would wait […]

Question Michelle, a student studying music, randomly sampled fellow music majors and asked whether they listen to music while they study. The resulting confidence interval for the proportion of music […]

question 1 Peter has collected data to find that the finishing times for cyclists in a race has a normal distribution. Based on the Empirical Rule, what is the probability that […]

Question Two thousand students took an exam. The scores on the exam have an approximate normal distribution with a mean of μ=81 points and a standard deviation of σ=4 points. The middle 50% of the exam […]

Question As in the previous problem, a fair coin is flipped 80 times. If X is the number of heads, then the distribution of X can be approximated with a normal distribution, N(40,4.5), where the mean (μ) […]