a. Do you find statistical differences in the average salary between different gender? Explain your hypothesis analysis! b. b. Do you find statistical differences in the average salary between majors in College? Explain your hypothesis analysis! c. Do you find an interaction between Gender and College background? Explain your hypothesis analysis! C.

10. Gasoline prices. The Table 7 shows the gasoline prices (in dollars) for a sample of service stations. The prices are classified by vendor. At a = 0.05, is there enough evidence to conclude that at least 1 population mean gasoline price is different from the others? Table 7. Gasoline Prices (Dollars) Stewarts Valero Sunoco 2.50 2.52 2.51 2.51 2.51 2.51 2.50 2.51 2.53 2.53 2.51 2.50 2.49 2.52 2.50 2.53 2.52

double check + help

Would observations or interviews be more appropriate to research the following topic?How veterans find employment after exiting military service.O ObservationsO Interviews

The Question for this is: How do Best Rest customers feel about purchasing a mattress online?   I guess I just need help figuring out how I would tackle this problem using this data set (this is not all the numbers in the set), should i use a hypothesis test or correlation test, etc.?

The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.

3. Statistic or parameter ? a.Researchers want to determine what percentage of Maryland residents are in favor of the death penalty. Suppose that 7% of a random sample of 1200 residents are in favor of the death penalty. This percentage (7%) would represent statistic/parameter b. The online MBA director at a large business school surveys a sample of current students to determine their level of satisfaction with the program. She finds that 67% of them are "very satisfied" with the online program. This result is statistic/parameter. c. All the third graders in a county were asked to complete a survey about who likes vanilla ice cream. 90% response was in favor of the flavor. This is statistic/parameter. d. The average Statistics test scores of all students in in PGCC a. A study took a group of adults and randomly divided them into two groups. One group was told to drink tea every night for a week, while the other group was told not to drink tea that week. Researchers then compared when…

What's the difference between naturalistic observation and systematic observation?

13

Bullying,” according to noted expert Dan Olweus, “poisons the educational environment and affects the learning of every child.” Bullying and victimization are evident as early as preschool, with the problem peaking in middle school. Suppose you are interested in the emotional well-being of not only the victims but also bystanders, bullies, and those who bully but who are also victims (bully-victims). You decide to measure anxiety in a group of bullies and a group of victims using an 18-item, 5-point anxiety scale. Assume scores on the anxiety scale are normally distributed and that the variances of the anxiety scores are the same among bullies and victims. The group of 23 bullies scored an average of 40.1 with a sample standard deviation of 10 on the anxiety scale. The group of 28 victims scored an average of 46.8 with a sample standard deviation of 11 on the same scale. You do not have any presupposed assumptions about whether bullies or victims will be more anxious, so you formulate…