Claim: Most adults would not erase all of their personal information online if they could. A software firm survey of 486 randomly selected adults showed that 43% of them would erase all of their personal information online if they could. Complete parts(a) and (b) below.

a. Express the original claim in symbolic form. Let the parameter represent the adults that would erase their personal information.

b. Find the value of the test statistic.

a) Null hypothesis:  

Alternative hypothesis:

b)  

Step-by-step explanation:

Data given and notation

n=486 represent the random sample taken

estimated proportion of interest

is the value that we want to test

represent the significance level

z would represent the statistic (variable of interest)

represent the p value (variable of interest)  

Part a: Concepts and formulas to use  

We need to conduct a hypothesis in order to test the claim that most of adults not erase all of their personal info.:  

Null hypothesis:  

Alternative hypothesis:  

When we conduct a proportion test we need to use the z statistic, and the is given by:  

(1)  

The One-Sample Proportion Test is used to assess whether a population proportion is significantly different from a hypothesized value .

Part b: Calculate the statistic  

Since we have all the info required we can replace in formula (1) like this:  

answer: need picture of problem

step-by-step explanation:

the monthly balance will be $75,000