1. Secured card
2. Prepaid card
The appropriate response is the double-blind procedure. A double-blind study is one in which neither the members nor the experimenters know who is getting a specific treatment. This technique is used to avert predisposition in research comes about. Twofold visually impaired reviews are especially helpful for averting inclination because of interest qualities or the misleading impact.
Limitations are important to understand for placing research findings in context, interpreting the validity of the scientific work, and ascribing a credibility level to the conclusions of published research. This goes beyond listing the magnitude and direction of random and systematic errors and validity problems.
Answer:
$270.2576
Explanation:
Given:
Items to be purchased by Sara:
keyboard, $9.99
mouse, $14.99
22-inch monitor, $99.99
chair, $129.99
Sales tax = 6%
To find: total amount after applying sales tax
Solution:
Total amount before applying sales tax = 
Amount of sales tax = 
= $15.2976
Total amount after applying sales tax
So,
total of her purchase after applying sales tax = 
Sara has 
> $270.2576 with her, so she can easily buy the products.
