Question: TIMSS 2003 (Trends in International Mathematics and Science Study) focused on the mathematics and science achievement of eighth-graders throughout the world. A total of 45

TIMSS 2003 (Trends in International Mathematics and Science Study) focused on the mathematics and science achievement of eighth-graders throughout the world. A total of 45 countries (including the United States) participated in the study. The mean math exam score for U.S. students was 504 with a standard deviation of 88.

Source: http://nces.ed.gov/timss/TIMSS03Tables Assume the scores are normally distributed and a sample of 150 students is taken.

a. Find the probability that the mean TIMSS score for a randomly selected group of eighthgraders would be between 495 and 510.

b. Find the probability that the mean TIMSS score for a randomly selected group of eighthgraders would be less than 520.

c. Do you think the assumption of normality is reasonable? Explain.

Step by Step Solution

★★★★★

3.44 Rating (154 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!

On January 1, 2014, a U.S. company purchased 100% of the outstanding stock of Ventana Grains, a company located in Latz City, New Zealand. Ventana Grains was organized on January 1, 2000. All the...

TIMSS 2003 (Trends in International Mathematics and Science Study) focused on the mathematics and science achievement of eighth-graders throughout the world. A total of 45 countries (including the...

TIMSS 2007 (Trends in International Mathematics and Science Study) focused on the mathematics and science achievement of eighth-grade students throughout the worl d. A total of 8 countries (including...

Summarize the attached document of the WDR 2018 OVERVIEW Learning to realize education's promise Learning to realize education's promise Assess learning Act on evidence Align actors to make it a...

Atl Econ J (2013) 41:89-91 DOI 10.1007/s11293-012-9342-2 ANTHOLOGY Social Capital and Income Inequality in the United States Rati Ram Published online: 17 October 2012 # International Atlantic...

Hospitality and tourism industry amid COVID-19 pandemic: Perspectives on challenges and learnings from India Abstract COVID-19 outbreak has presented unprecedented circumstances before the fragile...

Question 3 (a) Compute the 2014 inventory turnover ratio and the days in inventory ratio. Note: what Groupon calls finished goods inventory is really merchandise inventory. Further, these...

What source of competitive advantage does eBay have, and is that position supported by its resources and assets? 250 and over words in total CASE 13 players such as Yahoo and Amazon posed a major...

Individual Case Analysis Four cases are available from Harvard (see first : Case pack of 4 cases available at: http://cb.hbsp.harvard.edu/cbmp/access/49960103 ). Answer each of these questions in...

Discuss 8 management topics in strategic management and how they will affect my life as a business manager.

KMH Bhd purchased a 25-storey building as an investment property on 1 January 2019 for RM30 million. The legal cost and other incidental costs relating to the purchase of the building were RM8...

Round all present value calculations to the nearest dollar and payback periods to two decimal places. Problem 12-42 Basic Net Present Value Analysis Jonathan Butler, process engineer, knows that the...

Calculate the concentration of all species in a 0.500 M solution of H 2 SO 3 .

The following table presents the circulation (in thousands) for the top 25 U.S. daily newspapers in both print and digital editions. a. Find the mean and median circulation for print editions. b....

The following tables present the number of specimens that tested positive for Type A and Type B influenza in the United States during the first 15 weeks of a recent flu season. a. Find the mean and...

Following are the closing prices of Google stock for each trading day in May and June of a recent year. a. Find the mean and median price in May. b. Find the mean and median price in June. c. Does...

Suppose the Baseball Hall of Fame in Cooperstown, New York, has approached Hero-Cards with a special order The Hall of Fame wishes to purchase 57,000 baseball card packs for a special promotional...

O My Ove borporated's corbution margin as 0% and sed monthly expenses are $4500 Assuming that the fed monthly expenses do not change, what is the best estimate of the company's net operating arth...

3 Briefly describe the historical-cost-constant purchasing power and current-cost models. How are they similar? How do they differ? (3 Marks) Question 4 What is a gearing adjustment, and on what...