# Statistic

birth weight of infants: a health care professional wishes to estimate the birth weights of infants. the researcher desires to be 99% confident that the true mean is within 2.5 ounces of the sample mean. the standard deviation of infant birth wieghts is known to be 7 ounces. show work

a.based on the information provided above, how large a sample must be obtained

b. if the resercher wanted to be 90% confident, how large should the sample size be

c. for which situation- a or b was the sample size, n, larger. explain why the calculated sample size was larger

1. 👍
2. 👎
3. 👁

## Similar Questions

1. ### Health

Birth control methods can be behavioral, barrier, or hormonal. Which is a behavioral method of birth control? A. abstinence B. birth control pill C. condoms D. emergency contraception

2. ### ncu

a health care professional wishes to estimate the birth weight of infants how large a sample must she select to be 90% confident that the true mean is within 6 ounces of e sample mean. the standard deviation of birth weights is is

3. ### Social studies

1. identify the process by which a highly developed populations rate of growth will stabilize. a mortality rate******* b urbanization c demographic transition 2. according to speculation instead of you, what will happen to the

4. ### Math

In health class, students recorded the weights of the sandwiches they have for lunch. The weights are shown in the line plot below. What is the average weight of one sandwich? X X X. X. X. X X. X. X. X 1/8. 1/4 3/8 1/2

1. ### Stastics

A doctor at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she desires to be 98% confident that the true mean is within 2 ounces of the sample mean? The standard

2. ### algebra

A baby weighed 7.25 lb at birth. At the end of 8 months, the baby weighed 2 1/2 times its birth weight. How many pounds did the baby weigh at the end of 8 months?

3. ### Statistics

A nurse at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she desires to be 99% confident that the true mean is within 2 ounces of the sample mean? The standard

4. ### Health (Ms. Sue)

1. Classify the following as risks to teen mothers, to teen fathers, or to teen parents. a. interrupted education --- teen parents b. limited job options ---- teen parents c. physical stress to bones --- teen mothers d. lower

1. ### Statistics

A health care professional wishes to estimate the birth weights of infants. The standard deviation of the birth weights is known to be 8 ounces. How large a sample must she select if she desires to be 95% confident that the true

2. ### Introduction to Early Childhood Education

Early childcare education professionals teach children for birth to age 3 age 3 to 6 age 3 to 8 birth to age 8** Child care centers and family child care homes provide care and educations under federal regulations**?? in

3. ### mathematics

Which of the following best represents the average rate at which infants grow in height during the first four years after birth? (2 points) Select one: a. 3 inches per month b. 3 inches per year c. 3 feet per month d. 3 feet per

4. ### HISTORY

i need to write a biography and a birth certificate on george brown. but i have no idea what a biography, birth certificate are suposed to look like use search engines and use images Thank you for using the Jiskha Homework Help