Mathematics, 01.07.2021 03:50, NotCJ9006
The heights (in inches) and pulse rates (in beats per minute) for a sample of 40 women were measured. Using technology with the paired height/pulse data, the linear correlation coefficient is found to be 0.202. Assuming a 0.01 level of significance, find the critical value. Is there sufficient evidence to support the claim that there is a linear correlation between the heights and pulse rates of women?
A. Critical value = ±0.402 ; there is not sufficient evidence to support the claim that there is a linear correlation between the heights and pulse rates of women.
B. Critical value = ±0.312 ; there is sufficient evidence to support the claim that there is a linear correlation between the heights and pulse rates of women.
C. Critical value = ±0.402 ; there is sufficient evidence to support the claim that there is a linear correlation between the heights and pulse rates of women.
D. Critical value = ±0.312 ; there is not sufficient evidence to support the claim that there is a linear correlation between the heights and pulse rates of women.
Answers: 2
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Mathematics, 22.06.2019 01:00, sdwhitneyhillis
Arrange the steps to solve this system of linear equations in the correct sequence. x + y = -2 2x – 3y = -9 tiles subtract 3x + 3y = -6 (obtained in step 1) from 2x – 3y = -9 (given) to solve for x. substitute the value of x in the first equation (x + y = -2) to get y = 1. the solution for the system of equations is (-3, 1). x = -15 the solution for the system of equations is (-15, 13). add 3x + 3y = -6 (obtained in step 1) to 2x – 3y = -9 (given), and solve for x. x = -3 substitute the value of x in the first equation (x + y = -2) to get y = 13. multiply the first equation by 3: 3(x + y) = 3(-2) 3x + 3y = -6.
Answers: 1
The heights (in inches) and pulse rates (in beats per minute) for a sample of 40 women were measured...
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History, 30.12.2019 22:31