A random sample is to be selected from a population that has a proportion of successes p 5 .65. Determine the mean and standard deviation of the sampling distribution of p⁄ for each of the following sample sizes: a. n 5 10 b. n 5 20 c. n 5 30d. n 5 50 e. n 5 100 f. n 5 200

44 randomly selected students were asked how many siblings were in their family. Let X represent the number of pairs of siblings in the student's family. The results are as follows: # of Siblings Frequency 1 2 3 4 6 11 7 5 3 7 Round all your answers to 4 decimal places where possible. The mean is: The median is: The sample standard deviation is: The first quartile is: The third quartile is: What percent of the respondents have at least 4 siblings? 66% of all respondents have fewer than how many siblings?

3. Complete the first 3 columns of the table below. Values Deviations Square deviations X - X X (X-X)² Standard (z) scores X - X S Z= a. Compute the sample variance and sample standard deviation by definition. b. Fill in the last column of the table c. Compute the coefficient of variation.

Listed below are the top 10 annual salaries​ (in millions of​ dollars) of TV personalities. Find the​ range, variance, and standard deviation for the sample data. Given that these are the top 10​ salaries, do we know anything about the variation of salaries of TV personalities in​ general? a. the range  of the sample data is   ​$ million. ​(Type an integer or a​ decimal.) b.The variance of the sample data is ​(Round to two decimal places as​ needed.) c. The standard deviation of the sample data is    ​$ million. ​(Round to two decimal places as​ needed.)