The sample should include (Type whole numbers.) men and women.

How many samples or treatments are here?   490 undergraduate students at a state university in the southwestern region of the United States were surveyed. Each student in the sample was classified according to class standing (freshman, sophomore, junior, or senior) and body are category (body piercings only, tattoos only, both tattoos and body piercings, no body art). Use the data in the accompanying table to determine if there is an association between class standing and body art category. Assume that it is reasonable to regard the sample as representative of the students at this university. Use α = 0.01.                                                             Freshman  Sophmore   Junior    Senior Body Piercings                                          61              7              14          86 Only Tattoos                                             43              11             10         64 Only Mildly Piercings and Tattoos            20                9              7…

Billy has a bag of 30 marbles. He must choose only 6 marbles to bring for show and tell. What is the size of the sample space in this experiment

In Problems 9-12, conduct each test at the a= 0.05 level of significance by determining (a) the null and alternative hypotheses, (b) the test statistic, (c) the critical value, and (d) the P-value. Assume that the samples were obtained independently using simple random sampling.

Suppose 20% of the students on campus smoke. You select two students at random. In what percentage of samples will both students be smokers?

The amount X of orange juice in a randomly selected half-gallon container varies according to a normal distribution with mean 64 ounces and standard deviation 0.25 ounces. What is the median amount of orange juice in those containers?

advocacy organization surveys 966 citizens of country A and 186 of them reported being born in another country. Similarly, 177 out of 1213 citizens of country B reported being foreign-born. The researchers want to test if the proportions of foreign born are the e in country B as in country A. Complete parts a through c below. What is the difference in the sample proportions, p, - p2, of foreign born residents from both countries? Assume p, is the proportion of foreign born residents from country A and p, is the proportion of foreign born residents from country B. difference in the sample proportions, p1-P2, is und to three decimal places as needed )

Task-1. Define the terms Population and Sample, why sampling is done and what are the characteristics of a good sample. Include examples, preferably with an engineering background.

A researcher studying allergies to animals is interested in performing a study at the local elementary school. At Pineview Elementary, there are 4 1st grade classrooms. The researcher picks 2 of the 4 classrooms and asks every 1st grader in the 2 classrooms what type of animal they own (cat, dog, rabbit, etc.). He also asks how often they experience allergies. What is the sample?

Please answer all parts.