According to a magazine, a cleaning solution of 5% bleach will remove mildew from a shower or tub. a. how many ounces of bleach do you need to make a quart of 5% bleach solution? b. explain the method you used using complete sentences. whats the answer?

A quart is 32 ounces. The usual "bleach" is a 1.25% bleach solution, so you can't easily make a 5% solution from it. If you had pure "bleach" (usually sodium hypochlorite), you would need 5% of 32 ounces, which is 1.6 ounces of it. Thank you for posting your question here at . I hope the answer will help you. Feel free to ask more questions here.

The least number of tennis balls needed for the sample is 1849.

Step-by-step explanation:

The (1 - α) % confidence interval for population proportion is:

 

The margin of error for this interval is:

 

Assume that the proportion of all defective tennis balls is p = 0.50.

The information provided is:

MOE = 0.03  

Confidence level = 99%

α = 1%

Compute the critical value of z for α = 1% as follows:

 

*Use a z-table.

Compute the sample size required as follows:

 

       

             

Thus, the least number of tennis balls needed for the sample is 1849.