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!
Other questions we are asked is about children and when can they ride in the front seat and when can they be out of a booster seat. When can my child ride in the front seat? Age 12 or 100 pounds (whichever comes first): This means if you have an 11 year old who weighs 100lbs. that child can sit in the front seat. It also means that if you have 12 years old who weighs 90lbs. that child can sit in the front seat.