A study of 375 women who lived in pre-industrial Finland using Finnish church records from 1640 to 1870 found that there was roughly a linear relationship between y=lifelength (in years) and x= number of sons the woman had, with a slope estimate of -.65 (se=.29)

1. Interpret the sign of the slope. Is the effect of having more boys good or bad?

2. Researchers are wondering whether lifelength is independent of number of sons. Can you help them answer this question? If so, do so by conducting a hypothesis test.

3. Give a 95% confidence interval for the true slope. Interpret. Is it plausible that the effect is relatively weak, with true slope near 0?

$35.59 in pounds

step-by-step explanation:

step-by-step explanation:

answer: options

step-by-step explanation:

p ÷ r = tan(x)

step-by-step explanation:

given that there is a figure below shows a right triangle: a right triangle is shown with hypotenuse equal to q units and the length of the legs equal to p units and r units.

graph is missing so i will create the graph as per given information.

the angle between the legs having lengths p units and q units is y degrees. the angle between the legs having lengths r units and q units is x degrees.

now we need to find about what is p ÷ r equal to.

so we can use trigonometric ratio tan(x)=[altitude]/[base] to find the value of p ÷ r, because p is the altitude and r is the base.

p ÷ r=tan(x)

hence final answer is p ÷ r=tan(x).