‪
-A biologist interested in estimating the correlation between the body mass (in grams) and body length (in cm) of porcupines has a random sample of 18 porcupines with
The bootstrap distribution she constructed is approximately normal and the standard error is estimated to be 0.165. Use the normal distribution to construct and interpret a 98% confidence interval for the correlation between body mass and body length in porcupines. Round all values to three decimal places.
A) 0.023 to 0.791
B) 0.019 to 0.795
C) 0.010 to 0.840
D) 0.028 to 0.800

Question

‪ 
-A biologist interested in estimating the correlation between the body mass (in grams) and body length (in cm) of porcupines has a random sample of 18 porcupines with  
 The bootstrap distribution she constructed is approximately normal and the standard error is estimated to be 0.165. Use the normal distribution to construct and interpret a 98% confidence interval for the correlation between body mass and body length in porcupines. Round all values to three decimal places.
A) 0.023 to 0.791 
B) 0.019 to 0.795 
C) 0.010 to 0.840 
D) 0.028 to 0.800

Quizplus · Accepted Answer

z* = 2.326
0.407 ± 2.326(0.165)
0.023 to 0.791
We are 98% sure that the correlation between body mass and body length of porcupines is between 0.023 and 0.791.

‪ -A Biologist Interested in Estimating the Correlation Between the Body