For any population with mean Î¼and standard deviation.  The mean, or center of the sampling distribution of, is equal to the population mean Î¼:Î¼ x = Î¼.  The standard deviation of the sampling distribution is Ï/â n, where n is the sample size: Ï x = Ï / â n.
Usually a child should be 13 or older to ride in the front seat. If the child is too small then the front airbags can be dangerous and they may still need a booster seat. When â¦ they outgrow booster seats then they should be large enough to ride on the seat with just seatbelts. Always make sure they are buckled up!
As of Oct. 7, 2009, Ohioâs children are required to use belt-positioning booster seats once they outgrow their child safety seats until they are 8 years old, unless they are at least 4 feet, 9 inches (57 inches) tall. Ohioâs child passenger safety law requires the following:1  Children less than 4 years old or 40 pounds must use a child safety seat meeting federal motor vehicle safety standards. 2  Children less than 8 years old, unless they are at least 4 feet, 9 inches tall must use a booster seat.s of Oct. 7, 2009, Ohioâs children are required to use belt-positioning booster seats once they outgrow their child safety seats until they are 8 years old, unless they are at least 4 feet, 9 inches (57 inches) tall. Ohioâs child passenger safety law requires the following: