Question

25) Is it parameter or statistic? Please, explain why.

a high school degree; high school degree; more than high school degree. 24) A researcher wants to investigate a correlation between meth use as a teen, and having marital problems as an adult a) Identify the population b) What are the two groups that are being compared? c) What is the explanatory variable? What is the response? d) Find a confounding variable. e) Which type of study is more appropriate: observational or experimental? Justify your answer 25) A study finds that the average cost of a gym membership in the US is S34 a month. Is S34 a parameter or statistic? Justify your ans wer. 26) (3 points) Locate te mean, median and mode for the graph shown below: Median__ e Mean 27) In how many ways can 8 people be arranged for a photograph session? 28) Identify the sampling technique used in the following study: In an effort to determine customer satisfaction Delta Airline randomly select 59 flights during certain week and survey all passengers on thos e flights. 29) Suppose 40 cars start at a car race. How many ways can the top three cars finish the race? 30) A machine has a probability 0.03 of producing a defective golf ball. When 3 golf balls are manufactured by this machine, find the probability that none of the golf balls is defective. 31) When three people are selected randomly, find the probability that their birthdays are all different. 32) The mean credit card debt for college students in the U.S. is $2100. Is 2100 a parameter or statistic? Justify your answer 33) How many different outcomes are possible when 3 dice and 2 coins are tossed? 34) Determine whether the following events are a) disjoint b) independent or dependent

Answer 1

25. It is parameter. since memebers in the US is population i.e. The average cost of gym membership in the US means population mean = $34

since
Parameters in statistics is an important component of any statistical analysis. In simple words, a parameter is any numerical quantity that characterizes a given population or some aspect of it. This means the parameter tells us something about the whole population.