The heights of dogs, in inches, in a city are normally distributed with a population standard deviation of 3 inches and an unknown population mean. if a random sample of 17 dogs is taken and results in a sample mean of 28 inches, find the error bound (ebm) of the confidence interval with a 90% confidence level.

1.2703

Step-by-step explanation:

Given : Sample size : n= 17, which is a small sample (n<30), so we use t-test.

Significance level :

Then , Critical value :

Standard deviation:

The formula to find the margin of error : -

Hence, the error bound (EBM) of the confidence interval with a 90% confidence level.=1.2703

students group

step-by-step explanation:

a person who   joins a party or a seminar can explain his feelings about that particular occasion better more than anyone else.

as bella managed a show for the students in the school and invited students to watch that show

hence

students group will be the best group to survey to find this information

3 3 6, because in every triangle the longer side is always shorter than the sum of the other two