Stats homework please help

Question

1. At least 14% of all homeowners have a security alarm. Identify the type I error given the claim above.

(a) Less than 14% of all homeowners have a security alarm and you reject the null.

(b) At least 14% of all homeowners have a security alarm and you fail to reject the null.

(c) Less than 14% of all homeowners have a security alarm and you fail to reject the null.

(d) At least 14% of all homeowners have a security alarm and you reject the null.

1. Between which pair of variables can a correlation coefficient not be found?

(a) age and height

(b) hours studied and numerical test score

(c) number of credits taken and indicated major (d) years of schooling and salary

Answer 1

A type I error is when you falsely reject the null hypothesis, i.e., reject the null hypothesis when it is true. in d) the null hypothesis is stated and indicated as rejected.

You can only compute a correlation coefficient when the pairs of variables are quantitative data. Indicated major is qualitative data. c)