Social Media SamplingSuppose you have 113 Friends on Facebook and you want to choose a simple random sample of 20 of them. What is your population?Group of answer choicesThe proportion of all Facebook users who are your “Friend”The 20 Friends selected from FacebookYour 113 Friends on FacebookAll registered users of Facebook

According to Facebook’s self-reported statistics, the average Facebook user has 130 Facebook friends. For a statistics project, a student at Contra Costa College tests the hypothesis that CCC students will average more than 130 Facebook friends.She randomly selects 3 classes from the schedule of classes and distributes a survey in these classes. Her sample contains 45 students.Here are the null and alternative hypotheses for her study: H0: µ = 130, Ha: µ > 130.From her survey data, the statistics student calculates that the mean number of Facebook friends for her sample is 138.7 with a standard deviation of 79.3. She analyzed her data using a t-test and obtained a P-value of 0.23.What conclusion can she draw from her data? Even though 138.7 is larger than 130, it is not significantly larger than 130. In other words, the data do not provide enough evidence to conclude that the mean number of Facebook friends of all CCC college students is higher than 130. The sample value of 138.7 is significantly larger than 130. In other words the data provide provide enough evidence to conclude that the mean number of Facebook friends of all CCC college students is higher than 130. Nothing. The conditions for use of a t-test were not met. She cannot trust that the P-value is accurate for this reason.

Use the following to answer questions 26-33:The sampling distribution shows sample means from samples of size n = 50.What does one dot on the sampling distribution represent?Group of answer choicesThe mean of the quantity being estimated in one sample of 50 people.One person in the sampling distributionOne person in one sample of 50 people.The proportion of quantity being estimated in one sample of 50 people.None of the other answers are correct.

Suppose a population consisted of 20 items. How many different sample of n = 3 are possible?Question 13Select one:a.20b.120c.1140d.6840

A simple random sample is one which: a.The researcher has certain quota of respondents to fill for various social groupsb.A non-probability strategy is used, making the results difficult to generalizec.Every unit of the population has equal chance of being selected.d.from a random starting point, every nth unit from the sampling frame is selectedClear my choice

For the following, identify which type of sampling technique was used.To obtain a sample of the employees at a social media marketing company, 100 employees are randomly selected from a numbered list of the 1000 employees.