Please help me with these questions as I have been stuck for a while and need help. I will make sure we are both satisfied if I am satisfied. Go through my textbook if needed ( use keywords to find related stuff). Please solve it if you can

my textbook: https://docdro.id/yLjQcDT

Questions:

Question 8 Consider the following sample of 5 observations. -3, 12, 521, 10, 17 There is one outlier. Suppose we wish to remove the outlier from the calculations and calculate the standard deviation of the remaining values. What would the value of the standard deviation be? [Give your numeric response to *at least\" 3 decimal places. Include only the number, and no other characters or symbols in your response] Your Answer: \\ . Your Answer Question 9 | Researchers collected information on several species of fish in a Finnish lake. Two of the variables measured on the smelt were total length (nose to tip, in cm}, and weight (grams). The following plot and output represent the results of a regression of weight on total length for the 13 smelt in the study. 20 ,_.. 13~ U! E 16- E 9 14 E .91 12 a: g 10* a 12 13 1'4 15 16 Total Length (cm) Coefficients: Estimate Std. Error tvalue Pr(>|t|} (Intercept) -27.2412 3.7802 -7.206 1.74e-05 Length 2.9350 0.2849 10.302 5.49e-07 Multiple R-squared: 0.9061, Adjusted R-squared: 0.8976 Which of the following statements are true? There may be more than one correct statement; check all that are true. I: a} The p-value of the test of Hg : B1 = 0 against a two-sided alternative is 0.0000174. Cl b} There is strong evidence that the true slope is not 0. [:l c) The value of 130 is -27.2412. |._] d) Less than 80% of the variance of the weight of the smelt in the sample can be explained by the linear relationship with total length. Question 10 Which of the following statements are true? There may be more than one correct statement; check all that are true. [_] a) The chi-square distribution is symmetric about 0. |\\_.| bl The standard normal distribution is symmetric about O. l:' c) The t distribution is symmetric about 0. I: d) The Fdistribution is symmetric about 0