Police sometimes measure shoe prints at crime scenes so that they can learn something about criminals. Listed below are shoe print lengths, foot lengths, and heights of males. Construct a scatterplot, find the value of the linear correlation coefficient
The linear correlation coefficient is
(Round to three decimal places as needed.)
Determine the null and alternative hypotheses.
(Type integers or decimals. Do not round.)
The test statistic is
(Round to two decimal olaces as needed.)
The P-value is
(Round to three decimal places as needed.)
Because the P.value of the linear correlation coefficient is the significance level, there sufficient evidence to support the claim that there is a linear correlation between shoe print lengths and heights of males.
Based on these results, does it appear that police can use a shoe print length to estimate the height of a male?
A. No, because shoe print tength and height appear to be correlated.
B. Yes, because shoe print length and height appear to be correlated.
C. No, because shoe print length and height do not appear to be correlated.
D. Yes, because shoe print length and height do not appear to be correlated.
Final Answer: The linear correlation coefficient is
Step 1 :Construct a scatterplot of the data to visually inspect the relationship between shoe print length and height.
Step 2 :Calculate the linear correlation coefficient
Step 3 :Calculate the P-value of
Step 4 :If the P-value is less than the significance level of
Step 5 :Based on these results, determine whether it appears that police can use a shoe print length to estimate the height of a male.
Step 6 :The scatterplot shows a positive linear relationship between shoe print length and height, which suggests that as shoe print length increases, height also tends to increase.
Step 7 :The linear correlation coefficient
Step 8 :The P-value is a measure of the probability that we would observe the calculated
Step 9 :If the P-value is less than the significance level of
Step 10 :The linear correlation coefficient
Step 11 :The P-value is 0.073, which is greater than the significance level of
Step 12 :The null hypothesis is that there is no linear correlation between shoe print length and height, which is represented as
Step 13 :The test statistic is the value of the linear correlation coefficient
Step 14 :Based on these results, it does not appear that police can use a shoe print length to estimate the height of a male, because shoe print length and height do not appear to be correlated at the 0.01 level of significance.
Step 15 :Final Answer: The linear correlation coefficient is