Mean and standard deviation-sat verbal score

Assignment Help Basic Statistics

Reference no: EM13106145

1. A sample of 10 high school students completed a course designed to increase SAT verbal scores. The following is the summary for this group's SAT verbal scores after completion of the course: Σx= 5846, Σx2 =3428148.

a. What is the mean and standard deviation for this groups' SAT verbal score?

b. What is the 95% confidence interval for the mean SAT verbal score for these students?

c. In the past, students have had an average SAT verbal score of 542. Can the school accurately conclude that this new course significantly improved the SAT verbal scores of these 10 students? Write both a statistical statement and an English statement.

d. If a student made a 500 on this SAT, what would be his/her percentile rank?

Reference no: EM13106145

Questions Cloud

How to associate conception of plot to protagonist-crisis : Describe how you associate this conception of plot to the following elements of narrative: a) the protagonist; b) the conflict; c) the crisis.

Confidence intervals and probability : Suppose that 55 percent of the people in a population of 500,000 support your candidate. If you conduct a poll of 1,000 people, what is the interval that has a 95 percent chance of containing the results of your poll?

Find neils velocity and magnitude : Two friends, Barbara and Neil, are out rollerblading. With respect to the ground, Barbara is skating due south at a speed of 2.7 m/s. Neil is in front of her.

How authoritative and stable wiki is : You will examine a specific entry from wiki and check for changes that have occurred over a period of six months, then you will compare the information from the wiki entry with the information from an established reference source such as the Encyc..

Mean and standard deviation-sat verbal score : What is the mean and standard deviation for this groups' SAT verbal score? What is the 95% confidence interval for the mean SAT verbal score for these students?

Confidence interval-breaking strengths of cables : The breaking strengths of cables produced by a certain manufacturer have a standard deviation of 82 pounds. A random sample of 150 newly manufactured cables has a mean breaking strength of 1950 pounds.

Compute the percent change in multifactor productivity : David Upton is president of Upton Manufacturing, a producer of Go-Kart tires. Upton makes 1,000 tires per day with the following resources: Labor: 400 hours per day @ $12.50 per hour.

Internal-external forces influence organizational behavior : Examine how internal and external forces influence organizational behavior for each organization. Examples of internal and external forces.

Calculate percent change in productivity : Eric Johnson (using data from Problem 1.6) determines his costs to be as follows: • Labor: $10 per hour • Resin: $5 per pound • Capital expense: 1% per month of investment •

User Account

All Pages