Question: AP tests again: During a recent academic year, approximately 1.7 million students took one or more AP tests. Following is the frequency distribution of the

AP tests again: During a recent academic year, approximately 1.7 million students took one or more AP tests. Following is the frequency distribution of the number of AP tests taken by students who took one or more AP tests. Number of Tests Frequency (in 1000s) 1 953 2 423 3 194

Let X represent the number of exams taken by a student who took one or more.

a. Construct the probability distribution for X.

b. Find the probability that a student took exactly one exam.

c. Compute the mean μX.

d. Compute the standard deviation σX.

Number of Tests Frequency (in 1000s) 1 953 2 423 3 194 4 80 5 29 6 7 9 3 8 1 Total 1692

Step by Step Solution

★★★★★

3.46 Rating (156 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Elementary Statistics Questions!

e Let Us Try! 0' Hello! I hope you are having a good day. Before proceeding to Lesson 1, try to read and answer the activity below rst. Direction: Choose the letter of the correct answer and write...

During a recent academic year, approximately 1.7 million students took one or more AP tests. Following is the frequency distribution of the number of AP tests taken by students who took one or more...

AP tests again: During the 2008-2009 academic year. approximately 1.7 million students took one or more AP tests. Following is the frequency distribution of the number of AP tests taken by students...

AP tests again: During a recent academic year, approximately 1.7 million students took one or more AP tests. Following is the frequency distribution of the number of AP tests taken by students who...

COMM 215: BUSINESS STATISTICS REVIEW PROBLEMS 1 Descriptive Statistics 1. The listing below gives the service window of A&W: 4.91 0.85 0.52 2.51 1.92 2.66 1.94 5.19 2.33 3.51 2.95 2.62 service times...

Center for Learning and Technology COURSE SYLLABUS PRINCIPLES OF STATISTICS STA-201-GS Course Syllabus PRINCIPLES OF STATISTICS STA-201-GS Thomas Edison State College May 2015 Course Essentials...

1 of 14 23 The Chinese-Made Toy Recalls at Mattel, Inc. On September 21, 2007 in Beijing China, a meeting took place between Mt. La Changjiang a top Chinese quality official Mr. Thomas Debrowski, a...

solving a word problem and please do organize a answer 0 Question 10 v B 0/1 pt '0 3 8 99 CD Details The table below shows a stem-and-leaf diagram for the test scores of students in Liberal Arts...

Please see the attachment and prepare financial analysis using spreadsheet and determine whether or not they should go with the project. For the exclusive use of Z. Wu, 2016. REVISED APRIL 14, 2016...

Financial analysis you need to conduct: Financial of status quo: Cost of good sold? Variable cost? Contribution per unit? 5% increase of price will increase contribution by how much? Contribution...

The average reading achievement score for second graders on a nationally standardized test is 76.2%. The average score for Merriweather school district's 46 second graders on that same test is 74.6%....

Indigo Inc. has two divisions. Division A makes and sells student desks. Division B manufactures and sells reading lamps. Each desk has a reading lamp as one of its components Division A can purchase...

Conduct a survey of the sources of drinking water where you live and go to school. You should try and find out the answers to such questions as: 1. Where does my drinking water come from? 2. How is...

Distinguish between the utilitarian philosophy and deontology. Supply an example of a business that has used each to make a decision.

A recent Gallup survey of 1016 randomly selected adults showed that 21% of the respondents smoke. a. Express the original claim in symbolic form. b. Identify the null and alternative hypotheses.

When parents use the XSORT method of gender selection, the proportion of baby girls is greater than 0.5. dhe latest actual results show that among 945 babies born to couples using the XSORT method of...

Claim: dhe mean pulse rate (in beats per minute) of adult females is 76 or lower. For the random sample of adult females in Data Set 1 from Appendix B, the mean pulse rate is 77.5. a. Express the...

Bridgeport Corporation made credit sales of $30,600 which are subject to 5% sales tax. The corporation also made cash sales which totaled $19,635 including the 5% sales tax. (a) Prepare the entry to...

True or false: The cost of notes payable creates a tax shield (tax savings)

What is the time value of a put with a strike price of $30 when the option price is $5 and the underlying common stock sells for $27? A) $1 B) $2 C) $3 D) $4 Please explain how you arrived at the...