SOLUTION: The claim is that the proportion of drowning deaths of children attributable to beaches is more than 0.25, and the sample statistics include n= 616 drowning deaths of children with

Algebra.Com
Question 862802: The claim is that the proportion of drowning deaths of children attributable to beaches is more than 0.25, and the sample statistics include n= 616 drowning deaths of children with 30% of them attributable to beaches. Find z?
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!


Hi

sd = sqrt(.25*.75*616)

z = (.30-.25)/sd = .05/sd 

RELATED QUESTIONS


Find Z when:
The claim is that the proportion of drowning deaths of children... (answered by stanbon)

Find the test statistic z using:
A claim is made that the proportion of children who... (answered by jim_thompson5910,reviewermath)

a claim is made that the proportion of children who play sports is less than .5, and the... (answered by Theo)

A claim is made that the proportion of
children who play sports is less than 0.5, and... (answered by ewatrrr)

A Food Marketing Institute found that 25% of households spend more than $125 a week on... (answered by Theo)

Assume that the population proportion of adults having a college degree is 0.48. A random  (answered by Boreal)

It is reported that 19% of Caribbean children experience psychological 
maltreatment. A... (answered by ewatrrr)

BMI in children is approximately normally distributed with a mean of 24.5 and a standard... (answered by ewatrrr)

M10 #3
You are testing the claim that the proportion of men who own cats is larger than... (answered by Boreal)