Round each z-score to the nearest hundredth. A data set has a mean of x = 216 and a standard deviation of 42. Find the z-score for each of the following.

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

What is the distance between point a and b

Hurry can a triangle can be constructed with angles measuring 115°,55°, and 20°? yes or no