A1-pound bag of candy-coated chocolate-covered peanuts contained 224 pieces of candy, each colored brown, orange, green, or yellow. test the null hypothesis that the machine filling these bags treats the four colors of candy equally likely; that is, test h0 : pb = po = pg = py = 1 4 the observed values were 42 brown, 64 orange, 53 green, and 65 yellow candies. you may select the significance level or give an approximate p-value.

The colours are equally likely is the conclusion.

Step-by-step explanation:

Given that a 1-pound bag of candy-coated chocolate-covered peanuts contained 224 pieces of candy, each colored brown, orange, green, or yellow.

(Two tailed chi square test)

We assume H0 to be true and find the expected frequencies.  Then calculate chi square and check the p value

OrangwBrownGreen  Yellow  

Observed64425365224

Expected56565656224

O-E8-14-39  

chisqurae1.1428571433.50.1607142861.4464285716.25

df3    

p value=0.1000

let us assume alpha is 5%

since p value is >5% we accept H0

The colours are equally likely is the conclusion.    

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.