9 20 21 Questions 19-22 are related to the following 22 Your company self-insures its fleet of cars against collisions. You need to estimate the mean repair costs per accident so 23 that you can set aside enough money to cover these costs. The data for repair cost for a random sample of accidents is 24 shown below. 25 26 27 28 29 30 31 32 d $104,905 34 a 35 b 36 с d 78 37 33 19 The point estimate of the mean repair cost is, $2,274 $2,179 $2,087 $1,999 242 C 243 d 244 245 21 246 a 1320 2125 Ready 2305 1655 1540 1485 $484.52 $464.10 $444.54 $425.80 238 239 20 The standard deviation of the sample data is, 240 a 241 b 1370 2185 2950 2025 2005 2305 2155 1970 2050 2020 1990 1590 E270 HW5 LWP WEED Accessibility: Investigate Type here to search 1965 1075 2095 1830 2650 2690 2595 1950 965 1990 2285 1860 The margin of error for an interval estimate with a 95% level of confidence is, $129.08 2345 1920 1455 2170 O E 1840 2135 1870 1305 2645 2370 1940 1720 2760 2320 2790 2055 1670 1640 L Ⓡ

I need the right answer for a and b.

1. The maximum number of sit-ups completed by the participants in an exercise class after 1 month of the program is given below. Construct a two-stem stem and leaf plot.   24 31 54 62 36 28 55 18 27 80 37 58 32 37 41 55 39 56 42 29 35 35     2. Find the mean, median, 20% trimmed mean, first quartile, and third quartile for the data in question 3. Show your work for credit.         3. A statistics class has 20 female students and 10 male students. Average exams score for the females is 78.5 and the average exam score for the males is 72.1. What is the average exam score of the entire class?

The table below shows the number of state-registered automatic weapons and the murder rate for several states in the U.S. 11.6 8.4 6.7 3.5 2.7 2.7 2.2 0.9 14.1 11.3 9.9 6.8 6.2 6.3 5.8 I = thousands of automatic weapons y = murders per 100,000 residents Keep in mind, the data in the table do not necessarily imply a direct causal link between the two variables. (In fact, can you think of any reasons why these variables may not be directly related to each other?) Also, the purpose of this question is not to make a political statement about guns or gun control. It's only to illustrate that data such as these sometimes have mathematical relationships that can be modeled with linear equations. Those relationships should always be questioned and examined carefully. With that said, these data can be modeled by the equation y = 0.87z + 3.95. Use this equation to answer the following; A) If this model is oconsistent, how many murders per 100,000 residents can be expected in a state with 8.7…