GMU officials are trying to determine if they are using the correct number of campus shuttles for the number of students who use them. If the proportion of students who use the shuttles is significantly different from 0.28, the officials believe they will have to either remove or add a shuttle to the fleet. In a random sample of 444 people taken from the population of all individuals associated with GMU (including faculty, staff, and students) it was discovered that 123 of these individuals use the shuttle.
GMU officials are trying to determine if they are using the correct number of campus shuttles...
GMU officials are trying to determine if they are using the correct number of campus shuttles for the number of individuals who use them. If the proportion of individuals associated with GMU (including faculty, staff, and students) who use the shuttles is significantly different from 0.28, the officials believe they will have to either remove or add a shuttle to the fleet. In a random sample of 444 people taken from the population of all individuals associated with GMU (including...
Using α-005, is there sufficient evidence to conclude that less than 88% GMU students who utilize the food delivery robots skip breakfast? Conduct a full hypothesis test by following the steps below. p 0.8384 i. Define the population parameter in one sentence. Iternative hypotheses using correct notation. ii. State the significance level for this problem. iv. Check the three conditions of the Central Limit Theorem that allow you to use the one-proportion z-test using one complete sentence for each condition....
A random sample of 22 STAT 250 students was collected and the file size of Data Analysis 2 was recorded. The data was measured in megabytes. The instructors of the course claim that the file size will be different from 5 megabytes. Consider the population of all file sizes to be right-skewed. Using a = 0.01, is there sufficient evidence to conclude that the mean file size of Data Analysis 2 is different from 5 megabytes? Conduct a full hypothesis...
The Physical Fitness Test (PFT) is a comprehensive, health-related physical fitness battery of tests for students in K - 12. One fitness area is Aerobic Capacity and is tested by having students run one mile. In a particular county in Virginia, a sample of juniors in high school was collected and presented in the data set called "Running a Mile." If the student ran the mile in less than 10 minutes, they passed this portion of the test (and is...
Page 1 of 3 1Chapter 10 Quiz1.What is your favorite color? A large survey of countries, including the United States,China, Russia, France, Turkey, Kenya, and others, indicate that most people prefer the colorblue. In fact, about 24% of the population claim blue as their favorite color (Reference: Study byJ. Bunge and A. Freeman-Gallant, Statistics Center, Cornell University). Suppose a randomsample of 56 college students were surveyed and 12 of them said that blue is their favoritecolor. Does this information imply...
Suppose that students own an average of 4 pairs of jeans. 8 people from your class were surveyed to determine if the average for students in college is higher than 4. DATA TO USE: 3, 4, 4, 5, 5, 5, 7, 12 A) In words, CLEARLY state what your random variable X or P' represents. B) State the distribution to use for the test. If t, include the degrees of freedom. If normal, include the mean and standard deviation. C)...
Data concerning employment status were collected from a sample of 100 World Campus students at the beginning of the Fall 2018 semester. In that sample of 100, 67 were employed full-time. We want use these data to construct a 95% confidence interval to estimate the proportion of all World Campus students who are employed full-time. Is it appropriate to use the normal approximation method? Show all your work involved with checking these assumptions. Use Minitab Express to construct a 95%...
26. In a random sample of 95 college students, 40 wished they would have chosen a different major. Use the following steps to construct a 95% confidence interval for the true proportion of all students who wished they would have chosen a different major. a. Find the number of sample values, n b. Find the sample proportion, B c. Find the critical z-score, 2/2 d. When calculated correctly, E = 0.0993. Construct a confidence interval for the population proportion, p....
1. Determine the area under the standard normal curve that lies to the right of z = -.22 z = .29 c = 1.05 and d = -.97 2. A bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50. If an applicant is randomly selected, find the probability of a rating that is between 200 and 275. Round your answer to four decimal places. 3. The...
1. Suppose you are using a = 0.05 to test the claim that > 13 using a P-value. You are given the sample statistics n = 35, x = 13.3, and s-1.2. Find the P-value. The p-value is 2. In the test above, what is the standardized test statistic? The standardized test statistic: t = or z = (circle one and fill in) 3. Given He: p 2 80% and H. p < 80%, determine whether the hypothesis test is...