Public Health and Nutrition: Vitamin B3 (niacin) helps detoxify the body, aids digestion, can ease the pain of migraine headaches, and helps promote healthy skin. A random sample of adults in United states was obtained and the daily intake of niacin ( in milligrams) was recorded. The data are summarized in the table. Class ( Niacin intake in mg)  Frequency 0 – 3 15 4 – 7 23 8 – 11 21 12 – 15 14 16 – 19 12 What is total number of people who participated in the survey? 

Use this link to log into StatCrunch – Username and password are the same as Pearson. STATCRUNCH.COM

Identify which of these types of sampling is used: random, systematic, convenience, stratified or cluster. a) Testing Lipitor: In a clinical of the cholesterol drug Lipitor 300 subjects were randomly assigned to take the treatment. [1] b) Exit Polls: During the last presidential election, CNN conducted an exit poll in which specified polling stations were randomly selected and ALL voters were surveyed as they left the premises. [2]

The process by which the cell incorporates liquids from outside the cell is referred to as:

The due dates for this class are: 

Which of the following compounds is polar, slightly acidic, has no net charge and is called the universal solvent ?

I n order for an ion to be transported across a membrane against its concentration gradient.

    Please refer to the table below when answering this question. Consider that the compartments are separated by a semi-permeable membrane which is permeable to water but impermeable to solute X.                                                                               Concentration of Solute X moles/liter                    Case               Compartment 1            Compartment 2                      A                   300               150                      B                   150               300                      C                   150               150 In which of the above case will water move from compartment 1 to compartment 2 ? 

Which of the following is NOT a function of a plant’s root?

A workbook is required in this course, and you are expected to complete all assigned pages on your own. Which statement blow is NOT TRUE regarding the workbook assignments. Group of answer choices