According to recent studies, cholesterol levels in healthy adults average about 215 mg/dL with a standard deviation of about 28 mg/dL and are roughly normally distributed.

Question

Question

According to recent studies, cholesterol levels in healthy adults average about 215 mg/dL with a standard deviation of about 28 mg/dL and are roughly normally distributed.

Suppose we collect a random sample of 39 healthy adults and measure their cholesterol level. What is the standard deviation of the distribution of sample average (sampe size 39)?

Note:

1- Round any intermediate numbers to 3 decimal places.
2- Round your final answer to 3 decimal places. Enter your final answer with 3 decimal places.

Add a comment Improve this question Transcribed image text

Answer 1

Similar Homework Help Questions

According to recent studies, cholesterol levels in healthy adults average about 215 mg/dL with a standard deviation of about 28 mg/dL and are roughly normally distributed. Suppose we collect a random sample of 39 healthy adults and measure their cholester

Note:1- Round any intermediate numbers to 3 decimal places.2- Round your final answer to 3 decimal places. Enter your final answer with 3 decimal places.
Assume total cholesterol levels (TChol) are normally distributed with mean μ = 215 mg/dl and standard...

Assume total cholesterol levels (TChol) are normally distributed with mean μ = 215 mg/dl and standard deviation σ = 30 mg/dl for the adult American population. That is, TChol ~ N(215, 302). Total cholesterol values of 240 mg/dl or greater are considered high; and levels in the range of 200 to 240 are called borderline high. a. What proportion of this population do we expect to find with high cholesterol? What proportion do we expect to find with borderline high...
The mean cholesterol level for US adults was 199, with a standard deviation of 39. A...

The mean cholesterol level for US adults was 199, with a standard deviation of 39. A simple random sample of 107 adults is chosen. Use the Cumulative Normal Distribution Table . Round to four decimals. A) What is the probability that the mean cholesterol level is greater than 207? B) What is the probability that the sample mean cholesterol level is between 187 and 193?

According to one survey, the mean serum cholesterol level for U.S. adults was 199.3 , with a standard deviation of...

According to one survey, the mean serum cholesterol level for U.S. adults was 199.3 , with a standard deviation of 49.4. A simple random sample of 107 adults is chosen. Find the 35 percentile for the sample mean. Write only a number as your answer. Round to one decimal places (for example: 204.1). Do not write any units. Your Answer: Answer
According to a recent poll, 29% of adults in a certain area have high levels of...

According to a recent poll, 29% of adults in a certain area have high levels of cholesterol. They report that such elevated levels 'could be financially devastating to the regions healthcare system and are a major concern to health insurance providers. Assume the standard deviation from the recent studies is accurate and known. According to recent studies, cholesterol levels in healthy adults from the area average about 206 mg/dL, with a standard deviation of about 25 mg/dL, and are roughly...
2. Calcium levels in healthy adults are normally distributed with mean 9.5 mg/dl per deciliter and...

2. Calcium levels in healthy adults are normally distributed with mean 9.5 mg/dl per deciliter and known standard devtion. A physician in a rural community suspects that the mean calcium levels are different for women i this comunity. He collects measurements from 20 healthy women and finds = 9.2 with sample standard deviation s 1.1. (a) (1 point) Describe the parameter of interest to the physician (b) (2 points) State the nl and alternative hypotheses (c)(1 point) Suppose we assume...

The cholesterol levels of adult males are approximately normally distributed with a mean of 224 mg/dl,...

The cholesterol levels of adult males are approximately normally distributed with a mean of 224 mg/dl, and a variance, o', of 521. Some researchers claim that the variance of cholesterol levels of adult males is less than 521. A sample of 15 adult males' blood tests had a mean of 222.5 mg/dL and a variance of 192. Is there enough evidence to conclude, at the 0.05 level of significance, that the variance of cholesterol levels of adult males is less...
According to a recent poll, 27% of adults in a certain area have high levels of...

According to a recent poll, 27% of adults in a certain area have high levels of cholesterol. They report that such elevated levels "could be financially devastating to the regions healthcare system" and are a major concern to health insurance providers. Assume the standard deviation from the recent studies is accurate and known. According to recent studies, cholesterol levels in healthy adults from the area average about 205mg/dL, with a standard deviation of about 30mg/dL, and are roughly Normally distributed....
Watch your cholesterol: The mean serum cholesterol level for U.S. adults was 197, with a standard...

Watch your cholesterol: The mean serum cholesterol level for U.S. adults was 197, with a standard deviation of 38 (the units are milligrams per deciliter). A simple random sample of 105 adults is chosen. Use the TI-84 calculator. Round the answers to four decimal places. Part 1 of 3 What is the probability that the sample mean cholesterol level is greater than 206? The probability that the sample mean cholesterol level is greater than 206 is Part 2 of 3...

Question 3 (1 point) Consider a population with mean u = 45.0 and standard deviation =...

Question 3 (1 point) Consider a population with mean u = 45.0 and standard deviation = 1.84. Calculate the standard deviation of the sampling distribution if the size of the sample n = 680. Note: 1- Round any intermediate numbers to 4 decimal places. 2- Round your final answer to 3 decimal places. Enter your final answer with 3 decimal places. Your Answer: Answer

According to recent studies, cholesterol levels in healthy adults average about 215 mg/dL with a standard deviation of about 28 mg/dL and are roughly normally distributed.

Homework Answers

Request Answer!

Add Answer to:
According to recent studies, cholesterol levels in healthy adults average about 215 mg/dL with a standard deviation of about 28 mg/dL and are roughly normally distributed.

Post as a guest

Earn Coins

According to recent studies, cholesterol levels in healthy adults average about 215 mg/dL with a standard deviation of about 28 mg/dL and are roughly normally distributed. Suppose we collect a random sample of 39 healthy adults and measure their cholester

Assume total cholesterol levels (TChol) are normally distributed with mean μ = 215 mg/dl and standard...

The mean cholesterol level for US adults was 199, with a standard deviation of 39. A...

According to one survey, the mean serum cholesterol level for U.S. adults was 199.3 , with a standard deviation of...

According to a recent poll, 29% of adults in a certain area have high levels of...

2. Calcium levels in healthy adults are normally distributed with mean 9.5 mg/dl per deciliter and...

The cholesterol levels of adult males are approximately normally distributed with a mean of 224 mg/dl,...

According to a recent poll, 27% of adults in a certain area have high levels of...

Watch your cholesterol: The mean serum cholesterol level for U.S. adults was 197, with a standard...

Question 3 (1 point) Consider a population with mean u = 45.0 and standard deviation =...

According to recent studies, cholesterol levels in healthy adults average about 215 mg/dL with a standard deviation of about 28 mg/dL and are roughly normally distributed.

Homework Answers

Request Answer!

Add Answer to: According to recent studies, cholesterol levels in healthy adults average about 215 mg/dL with a standard deviation of about 28 mg/dL and are roughly normally distributed.

Post as a guest

Earn Coins

Add Answer to:
According to recent studies, cholesterol levels in healthy adults average about 215 mg/dL with a standard deviation of about 28 mg/dL and are roughly normally distributed.