# statistics

posted by .

At a local high school students were randomly assigned to one of two math teachers- Mrs smith and mrs jones. After the assignment, Mrs Smith had 30 students and mrs jones had 25 students. at the end of the year each class took the same standardized test. mrs smiths students had an average test score of 78 with a standard deviation of 10; and mrs jones students had an average test score of 85 with a standard deviation of 15. Test the hypothesis that mrs smith and mrs jones are equally effective teachers. Use a o.10 level of significance. What statistical test should be used?

## Similar Questions

1. ### biology

Genetic question Both Mrs. Smith and Mrs. Jones had babies the same day in the same hospital. Mrs. Smith took home a baby girl, whom she named Shirley. Mrs. Jones took home a baby girl, whom she named Jane. Mrs. Jones began to suspect, …
2. ### vocabulary

Teaching was INNATE to Mrs.Jones as both her parents had been A)CRUEL B)TEACHERS C)STUDENTS D)DULL
3. ### math

Mrs. Cindy needs to order new balls for the school students to use at recess. She asks the students what balls she should order. One-third of the students want Mrs. Cindy to order soccer balls. One-third of the students want Mrs. Cindy …
4. ### Math problem

Mrs. Jones owns 4/7 of the stock in a small business and Mrs.Brown owns the rest. Mrs. smith agrees to give \$21,000 in exchange for 1/3 of the stock. The \$21,000is to be divided between Mrs. jones and Mrs. Brown so that all three will …
5. ### Math problem

Mrs. Jones owns 4/7 of the stock in a small business and Mrs.Brown owns the rest. Mrs. smith agrees to give \$21,000 in exchange for 1/3 of the stock. The \$21,000is to be divided between Mrs. jones and Mrs. Brown so that all three will …
6. ### Grammar ~CHECK MY WORK PLEASE~

Which of the following sentences is correct?
7. ### math

This table shows the numbers of students in different classes that are in the math club. Students in math club Boys / Girls Mrs.Smith 3 / 4 Ms.Jones 4 / 6 Mr.Brown 3 / 4 a. What fraction of the students in the math club are boys from …
8. ### math

Mrs Smith is having a party . She has 24 students . She estimates each student will eat 3/8.How many pizzas should Mrs. Smith order?
9. ### math

Mrs, jones is having a pizza party for 19 students. each pizza will be cut in 6 slices. how many pizzas will Mrs jones need to order?
10. ### law

1. Mrs. Jones agreed to a surrogate motherhood arrangement in which she would give up the child at birth to Mr. and Mrs. Smith. She was inseminated with Mr. Smith's sperm, and the baby was born on May 5, 2000. The baby was turned over …

More Similar Questions