4. Following are the 29 players on the opening-day roster of the 2019 Boston Red Sox Major League Baseball team, fielding positions, and salaries. Player Position Salary (US$) David Price Starting Pitcher $ 31,000,000 J.D. Martinez Outfield $ 23,750,000 Rick Porcello Starting Pitcher $ 21,125,000 Mookie Betts Relief Pitcher $ 20,000,000 Nathan Eovaldi Starting Pitcher $ 17,000,000 Chris Sale Starting Pitcher $ 15,000,000 Dustin Pedroia Infield $ 14,521,686 xander Bogaerts Infield $ 12,000,000 Jackie Bradley Jr. Outfield $ 8,550,000 Mitch Moreland Infield $ 6,500,000 Steve Pearce Infield $ 6,250,000 Eduardo Nunez Infield $ 5,000,000 Eduardo Rodriguez Starting Pitcher $ 4,300,000 Brock Holt Infield $ 3,575,000 Christian Vazquez Catcher $2,933,333 Tyler Thornburg Relief Pitcher $ 1,750,000 Matt Barnes Relief Pitcher $ 1,600,000 Steven Wright Starting Pitcher $ 1,375,000 Heath Hembree Relief Pitcher $ 1,312,500 Brandon Workman Relief Pitcher $ 910,000 Blake Swihart Catcher $ 717,500 Andrew Benintendi Outfield $ 614,500 Rafael Devers Infield $ 577,500 Ryan Brasier Relief Pitcher $ 575,000 Brian Johnson Relief Pitcher $ 568,500 Hector Velazquez Relief Pitcher $ 564,000 Marco Hernandez Infield $ 558,500 Sam Travis Infield $ 557,000 Colten Brewer Relief Pitcher $ 548,000 Sort the players into two groups, all pitchers (relief and starting) and position players (all others). Assume equal population standard deviations for the pitchers and the position players. Test the hypothesis that mean salaries of pitchers and position players are equal using the 0.01 significance level. a. State the null and alternative hypothesis. H0: the means are same H1: the means are different b. What is the decision rule? (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places.) Reject H0 if t is not between ________and ______ c. Calculate the test statistic. (Round your answer to 3 decimal places.) Value of the test statistic ________ d. What is your decision regarding H0? Do not reject H0 e. Is there a difference in the mean salaries of pitchers and position players? no (I need the answer for B and C all the other parts are correct for this question.)
4. Following are the 29 players on the opening-day roster of the 2019 Boston Red Sox Major League Baseball team, fielding positions, and salaries.
Player | Position | Salary (US$) |
---|---|---|
David Price | Starting Pitcher | $ 31,000,000 |
J.D. Martinez | Outfield | $ 23,750,000 |
Rick Porcello | Starting Pitcher | $ 21,125,000 |
Mookie Betts | Relief Pitcher | $ 20,000,000 |
Nathan Eovaldi | Starting Pitcher | $ 17,000,000 |
Chris Sale | Starting Pitcher | $ 15,000,000 |
Dustin Pedroia | Infield | $ 14,521,686 |
xander Bogaerts | Infield | $ 12,000,000 |
Jackie Bradley Jr. | Outfield | $ 8,550,000 |
Mitch Moreland | Infield | $ 6,500,000 |
Steve Pearce | Infield | $ 6,250,000 |
Eduardo Nunez | Infield | $ 5,000,000 |
Eduardo Rodriguez | Starting Pitcher | $ 4,300,000 |
Brock Holt | Infield | $ 3,575,000 |
Christian Vazquez | Catcher | $2,933,333 |
Tyler Thornburg | Relief Pitcher | $ 1,750,000 |
Matt Barnes | Relief Pitcher | $ 1,600,000 |
Steven Wright | Starting Pitcher | $ 1,375,000 |
Heath Hembree | Relief Pitcher | $ 1,312,500 |
Brandon Workman | Relief Pitcher | $ 910,000 |
Blake Swihart | Catcher | $ 717,500 |
Andrew Benintendi | Outfield | $ 614,500 |
Rafael Devers | Infield | $ 577,500 |
Ryan Brasier | Relief Pitcher | $ 575,000 |
Brian Johnson | Relief Pitcher | $ 568,500 |
Hector Velazquez | Relief Pitcher | $ 564,000 |
Marco Hernandez | Infield | $ 558,500 |
Sam Travis | Infield | $ 557,000 |
Colten Brewer | Relief Pitcher | $ 548,000 |
Sort the players into two groups, all pitchers (relief and starting) and position players (all others). Assume equal population standard deviations for the pitchers and the position players. Test the hypothesis that mean salaries of pitchers and position players are equal using the 0.01 significance level.
a. State the null and alternative hypothesis.
H0: the means are same
H1: the means are different
b. What is the decision rule? (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places.)
Reject H0 if t is not between ________and ______
c. Calculate the test statistic. (Round your answer to 3 decimal places.)
Value of the test statistic ________
d. What is your decision regarding H0?
Do not reject H0
e. Is there a difference in the mean salaries of pitchers and position players?
no
(I need the answer for B and C all the other parts are correct for this question.)
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