Download Learning Intro to Statistics Final Milestone Study Guide B and more Exams Statistics in PDF only on Docsity!
Learning Intro to Statistics Final Milestone Study Guide B
- Ralph records the time it takes for each of his classmates to run around the track one time. As heanalyzes the data on the graph, he notices very little variation between his classmates’ time. Which component of data analysis is Ralph observing? a. The overall spread of the data.
- Which of the following is an example of a parameter? a. All 450 students attending a school are asked to rank the quality of cafeteria food.
- Carl’s recorded the number of customers who visited his new store during the week:
Day Customers Monday 17 Tuesday 13 Wednesday 14 Thursday 16
He expected to have 15 customers each day. To answer whether the
number of customers follows a uniform distribution, a chi-square test for goodness of fit should be performed. What isthe chi-squared test statistic? Answers are rounded to the nearest hundredth. a..
- A magician asks an audience member to pick any number from 6 to 15. What is the theoreticalprobability that an individual chooses the number the magician has in his mind? a. 1/
- Adam tabulated the values for the average speeds on each day of his road trip as 60.5, 63.2, 54.7, 51.6, 72.3, 70.7, 67.2, and 65.4 mph. The sample standard deviation is 7.309. Select the98% confidence interval for Adam’s set of data. a. 55.45 to 70.
- An insurance firm wants to estimate the percentage of senior citizens in a small town with approximately 2,534 residents. It asks a group of 85 randomly selected people in town abouttheir age. Select the statement that is true. a. The samples is 85 people. The population is 2,534 people.
- A market research company conducted a survey of two groups of students from different schools. They found that students from school A spent an
Student 4 4 7 Student 5 8 9
For English the mean is 6.4 and the standard deviation is 2.0.For Science the mean is 7 and the standard deviation is 1.6.
Find the correlation coefficient, r, for this set of scores. Answer choices are rounded to the nearesthundredths.
a..
- Jenae changed the original coffee labels with plain white ones that had a flavor printed in bold black letters and she placed them on the coffee pots for a week-long experiment. Jenae used anaspect of experimental design known as when she created the labels to have thesame appearance. a. A control
- Researchers want to test the effects of a new weigh loss program. They believe that gender is asignificant factor. The participants are divided by gender. Then, within each group, participants are randomly assigned to
either the treatment or control group. Which of the following wouldbe the most effective to test the effects of the new weight loss program? a. A randomized block design experiment
- Which of the following data types will be continuous. a. Height of a toddler
- Which of the following is an example of a false negative? a. Test results indicated that a woman is not pregnant when she is.
- Jerry graded seven standardized tests with the following scores: 60, 74, 41, 87, 94, 79, 57. Whichstandardized test score represents the 50th^ percentile? a. 74
- Mark looked at the statistics for his favorite baseball player, Jose Bautista. Mark looked at seasons when Bautista played 100 or more games and found Bautista’s probability of hitting ahome run in a game is 0.173. If Mark uses the normal approximation of the binomial distribution, what will the variance of the number of home runs Bautista is projected to hit in100 games? Answer is rounded to the tenths place. a. 14.
- Select the statement that is true.
