Aleast squares regression line was created to predict the exam 3 score of sta 2023 students based on their exam 1 score. the study found that the value of r-squared was 28.8% and the least squares regression line was yhat=50.57+0.4845x. what is the correlation coefficient, r? a. 0.54b. -0.54c. 5.37d. -5.37e. 0.08f. -0.08

a) 0.54

Step-by-step explanation:

The correlation coefficient can be found by taking square root of R-squared value and the sign of correlation coefficient can be assessed by considering the sign of slope value. So,

r²=28.8%=28.8/100=0.288

r===0.5367

By rounding to two decimal places the correlation coefficient

r=0.54

We can see that slope=0.4845 has positive sign so, the correlation coefficient contains the positive sign.

Hence the correlation coefficient r=0.54.

answer: two high and two low

step-by-step explanation: because the earth rotates through two tidal “bulges” every lunar day, coastal areas experience every 24 hours and 50 minutes. high tides occur 12 hours and 25 minutes apart.