Aproposed null hypothesis states that there is no difference in the population mean heights of two neighboring districts. the difference of the sample means is 10 cm, and the standard deviation of the difference of sample means is 6 cm. which conclusion can we draw at the 68% confidence level?

Write the equation below the represents the line passing through the point (-3, -1) negative one with a slope of 4

With #! i’ve tried to figure it out but i can’t.

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds