Proportion of students drank seven or more cups of coffee

Reference no: EM13118716

A survey college students was conducted during final exam week to assess the number of cups of coffee consumed each day. The mean number of cups was 5 with a standard deviation of 1.5 cups. The distribution was normal.

a) What proportion of students drank 7 or more cups of coffee per day?
b)What proportion of students drank 2 or more cups of coffee per day?
c) What proportion of students drank between 2 and 7 cups of coffee per day?
d) How many cups of coffee would and individual at the 60th percentile rank drink?
e) What is the percentile rank for an individual who drinks 4 cups of coffee a day?
f) What is the percentile rank for an individual who drinks 7.5 cups of coffee a day?

Reference no: EM13118716

Questions Cloud

What is the struggle for existence : What is the struggle for existence (2)? Give an example of it, involving real organisms (the details may be speculative) (1). Is the struggle for existence required for the operation of natural selection? Explain (2).

Writing a research paper : The steps for writing a research paper. Acting in the role of a secondary-school English teacher, use a word processor (such as MS Word) to write a brief explanation for each step listed

How mutations can be beneficial : Mutations can be beneficial, deleterious or neutral. How would you design an experiment to evaluate the relative proportion of the different kinds of spontaneous mutations in an organism (2)?

Compute the acceleration of the crate : A 200-kg crate is pushed horizontally with a force of 715 N. If the coefficient of friction is 0.20, compute the acceleration of the crate.

Proportion of students drank seven or more cups of coffee : The mean number of cups was 5 with a standard deviation of 1.5 cups. The distribution was normal. What proportion of students drank 7 or more cups of coffee per day?

Determine the identity of the metal : A 4.000-g sample of the metal nitrate M(NO3)2 was dissolved in water and treated with excess aqueous sodium sulfate. The sulfate salt that formed weighed 3.318 g. Determine the identity of the metal.

Define germline and soma : Define germline and soma (1). Explain the concept of separation of germline and soma (2). Explain how this concept changed our understanding of the evolutionary significance of the inheritance of acquired characteristics (2).

Calculate the ph : The concentration of phosphoric acid in Coke is approximately 106.0 mg/mL. Assuming phosphoric acid is the only acid in Coke, calculate the pH of a 355 mL can of Coke.

Find out her altitude as she crosses the bar : Her speed when she is above the bar is 1.3 m/s. Neglect air resistance, as well as any energy absorbed by the pole, and find out her altitude as she crosses the bar.

User Account

All Pages