Quiz for 5wk Statistics

Ans: the random variable is being used in statistics and probability most of the time. This is also called stochastic or aleatory variable as his has an ability of making its values vary according to the subject or according to the chance that occur. A random variable has the ability of taking a set of different kind of values that also have the different value with the value associated with it.

7. The mean (X—) is a measure of ____________ ______________ of a distribution while the SD is a measure

3. List the probability value for each possibility in the binomial experiment that was calculated in MINITAB with the probability of a success being ½. (Complete sentence not necessary)

• Provide at least two examples or problem situations in which statistics was used or could be used.

9. Assume the weight, W, of a randomly selected adult has a normal distribution with a mean

(2) Give that a sample of 25 had x = 75, and (x-x)² = 48 the mean and standard

A pharmaceutical company is testing the effectiveness of a new drug for lowering cholesterol. As part of this trial, they wish to determine whether there is a difference between the effectiveness for women and for men. Using   = .05, what is the value the test statistic?

9. Flip a coin 25 times and keep track of the results. What is the experimental probability of landing on tails? What is the theoretical probability of landing on heads or tails?

Experimental probability is the fraction of times an event actually occurs and theoretical probability is the fraction of times we would expect an event to occur. I did not know these terms until after I read the article. The article shown me that there are so many ways to approach probability. It gave me an idea of using the line chart as an assessment of understanding probability. The number cube game gave me an idea of teaching probability by playing Yahtzee

According to the website http://womenissues.about.com/cs/abortionstats/a/aaabortionstats.htm there are approximately 126,000 abortions conducted each day throughout the world. This website includes the abortion statistics of the world and breaks the data down to the demographics of the United States. It also discusses the decisions to have an abortion and the use of contraceptives in the United States. This was an informative website and included detailed statistics conducted by the Alan Guttmacher Institute. According to the website http://www.bls.gov/cps in 2000, gon average there were roughly 135 million employed and 6 million unemployed people in the labor force in the United States.h (p. 3) The websites definition of

Example 11.12 (p. 428) studies hangover symptoms in college students (Slutske et al., 2003). The students answered questions about alcohol use and hangovers, including a count of how many out of a list of 13 possible hangover symptoms that they had experienced in the past year. For the 470 men, the mean number of symptoms was 5.3; for the 755 women, it was 5.1. The standard deviation was 3.4 for each of the two samples.

They will be high school students that will be randomly selected from a high school population. All participants will be about the same age, all high school students, and intelligence level since they will all be attending the same high school. The participants will be selected randomly from a high school population. The experiment will be conducted in the same way for all of the groups. Additionally, the same amount of M&Ms will be eaten by each participant during the experiment.

A total of 59 participants took part in this experiment. They were split into two independent experimental groups, one being the control group, and the other the experimental group. There were 30 participants in the control group, and 29 participants in the experimental group. The male to female ratio was fairly equal with

They were 67 participants in study 1 and they were students from the Princeton University subject pool, there was an equal amount of men and women in the study and 1 unknown. Also, 2 of the participants were excluded from the study, 1 because he was already exposed to the experiment material and the other

Sampling distribution of a sample statistics is the hypothetical distribution of the sample statistics of interest for a random sample, whereas the distribution of a sample is the probabilistic distribution of the ideas in the sample. The sampling distribution indicates how likely it is to get some definite sample when one draws a large amount of samples and the distribution of a sample shows how possible it is to get a particular data in a single random