A carbon skeleton is covalently bonded to both an amino group and a carboxyl group. When placed in water it

TLS Online TPP Program

#Question id: 16790

#Section 3: Mathematics and Quantitative Ecology

For the moderately symmetrical distribution of age of the employees, mean = 20 and mode = 25. The approximate value of the median is: 

TLS Online TPP Program

#Question id: 16791

#Section 3: Mathematics and Quantitative Ecology

The mode of a distribution is 24 and the mean is 60. What is its median? 

TLS Online TPP Program

#Question id: 16874

#Section 3: Mathematics and Quantitative Ecology

A randomly selected sample of 1,000 college students was asked whether they had ever used the drug Ecstasy. Sixteen percent (16% or 0.16) of the 1,000 students surveyed said they had. Which one of the following statements about the number 0.16 is correct?

TLS Online TPP Program

#Question id: 16875

#Section 3: Mathematics and Quantitative Ecology

In a random sample of 1000 students, pˆ = 0.80 (or 80%) were in favor of longer hours at the school library. The standard error of pˆ (the sample proportion) is

TLS Online TPP Program

#Question id: 16876

#Section 3: Mathematics and Quantitative Ecology

For a random sample of 9 women, the average resting pulse rate is x = 76 beats per minute, and the sample standard deviation is s = 5. The standard error of the sample mean is

TLS Online TPP Program

#Question id: 16877

#Section 3: Mathematics and Quantitative Ecology

Assume the cholesterol levels in a certain population have mean μ= 200 and standard deviation σ = 24. The cholesterol levels for a random sample of n = 9 individuals are measured and the sample mean x is determined. What is the z-score for a sample mean x = 180?