What is the chi-squared test statistic for this data set?What is the appropriate degrees of freedom value for this test? b.What is the critical value that you would use to determine if there is a difference in the distributions of fish sizes across the different lakes? c.Select a conclusion statement from a list of choices.(photo attached
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2w.need help with parts a-c
a.What is the chi-squared test statistic for this data set?What is the appropriate degrees of freedom value for this test?
b.What is the critical value that you would use to determine if there is a difference in the distributions of fish sizes across the different lakes?
c.Select a conclusion statement from a list of choices.(photo attached)
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- The manager of a fleet of automobiles is testing two brands of radial tires. He assigns one tire of each brand at random to the two rear wheels of eight cars and runs the cars until the tires wear out. The data (in kilometers) are shown below: Car Brand 1 Brand 2 1 34900 36700 2 45500 47200 3 37100 37700 4 32000 31400 5 48900 47800 6 32800 36900 7 38500 38900 8 30100 31800 Find a 95% confidence interval on the difference in mean mileage. Assume that the differences of the distances are approximately normally distributed.The data contained in the file FoodIndustry show the company/chain name, the average sales per store ($1,000s), and the food segment industry for 47 restaurant chains.† Company Segment 2012 U.S.AverageSales perStore($1,000s) Arby's Sandwich 993 Baskin-Robbins Snacks 207 Bojangles' Chicken 1,718 Boston Market Chicken 1,184 Burger King Burger 1,195 Carl's Jr. Burger 1,470 Checkers/Rally's Burger 903 Chick-fil-A Chicken 3,158 Chipotle MexicanGrill Mexican 2,113 Church's Chicken Chicken 707 CiCi's Pizza Pizza/Pasta 915 Culver's Burger 1,838 Dairy Queen Burger 545 Del Taco Mexican 1,100 Domino's Pizza Pizza/Pasta 710 Dunkin' Donuts Snacks 857 El Pollo Loco Chicken 1,475 Five GuysBurgers & Fries Burger 1,049 Hardee's Burger 1,145 In-N-Out Burger Burger 1,935 Jack in the Box Burger 1,379 Jamba Juice Snacks 715 Jason's Deli Sandwich 2,556 Jimmy John's Sandwich 879 Company Segment 2012 U.S.AverageSales perStore($1,000s) KFC…The data contained in the file FoodIndustry show the company/chain name, the average sales per store ($1,000s), and the food segment industry for 47 restaurant chains.† Company Segment 2012 U.S.AverageSales perStore($1,000s) Arby's Sandwich 993 Baskin-Robbins Snacks 207 Bojangles' Chicken 1,718 Boston Market Chicken 1,184 Burger King Burger 1,195 Carl's Jr. Burger 1,470 Checkers/Rally's Burger 903 Chick-fil-A Chicken 3,158 Chipotle MexicanGrill Mexican 2,113 Church's Chicken Chicken 707 CiCi's Pizza Pizza/Pasta 915 Culver's Burger 1,838 Dairy Queen Burger 545 Del Taco Mexican 1,100 Domino's Pizza Pizza/Pasta 710 Dunkin' Donuts Snacks 857 El Pollo Loco Chicken 1,475 Five GuysBurgers & Fries Burger 1,049 Hardee's Burger 1,145 In-N-Out Burger Burger 1,935 Jack in the Box Burger 1,379 Jamba Juice Snacks 715 Jason's Deli Sandwich 2,556 Jimmy John's Sandwich 879 Company Segment 2012 U.S.AverageSales perStore($1,000s) KFC…
- The following table shows the number of hours some high school students in 2 cities spend watching television each week: City A 21 23 24 22 24 25 23 23 22 City B 24 22 20 23 23 50 20 46 21 Part A: Create a five-number summary and calculate the interquartile range for the two sets of data, and tell whats the best measure of center. Justify.For a symmetric bell shaped data, of the five number summary are: 6,10, Y, 16 ,x thenIn order to estimate the relative abundance and geographic distribution of pheasants in Iowa, the Iowa Department of Natural Resources conducts annual road side surveys of pheasant populations. On the roads bordering five randomly selected farms in one county labeled generically as Farms A, B, C, D, and E, the survey counts were as follows: Farm # Pheasants Road miles A 3 1 B 8 1 C 9 2 D 5 1 E 11 3 One hypothesis about the geographic distribution of organisms, knowns as the spatial randomness hypothesis, asserts, as applied to the pheasant survey, that pheasants are randomly distributed throughout uniform habitat in such a way that the expected number of pheasants along any stretch of road is proportional to the length of that road. The lengths of road traveled along each farm are shown in the rightmost column of the table. Do the counts from the survey support or cast doubt on the spatial randomness hypothesis for pheasants on farmland in this country? Take a = 0.05.
- A panel of dentists is interested in testing two different toothpaste brands (A and B) to see if there is a relationship between the brand and whether or not the patient has a cavity at their next appointment. A representative sample of 60 patients is recruited to take part in the study. At their first appointment of the year, each subject is assigned to brush their teeth with one of the two brands for the next six months. At their follow-up appointment six months later, they were checked for cavities. What method of data collection was used? Select one: a.Experiment b.Observational StudyA panel of dentists is interested in testing two different toothpaste brands (A and B) to see if there is a relationship between the brand and whether or not the patient has a cavity at their next appointment. A representative sample of 60 patients is recruited to take part in the study. At their first appointment of the year, each subject is assigned to brush their teeth with one of the two brands for the next six months. At their follow-up appointment six months later, they were checked for cavities. To test for significance of their findings, which of the following should the dentists use? Select one: a.Paired t-test b.One-sample t-test for a mean c.Linear Regression d.One-sample Z-test for a proportion e.Chi-Square test for independence f.Two-Sample t-test g.One-sample Z-test for a meanHere's the dataset: Golfer Distance Accuracy Index Woods 316.1 54.6 3.58 Perry 304.7 63.4 3.48 Gutschewski 310.5 57.9 3.27 Wetterich 311.7 56.6 3.18 Hearn 295.2 68.5 2.82 Gronberg 301.4 63.2 2.74 Frazar 301 63.5 2.74 Warren 299.2 64.2 2.55 Glover 302.2 60.7 2.27 MacKenzie 300.2 62.1 2.22 Love III 305.4 57.9 2.21 Garcia 303.5 59.4 2.21 Durant 289.2 70.9 2.2 O'Hair 300.1 61.4 2.02 Singh 301.1 60.2 1.92 Long 298.3 62.4 1.9 Smith 300.8 60.2 1.85 Hend 318.9 45.4 1.89 Hughes 291.3 67.5 1.76 Stadler 300.1 60.4 1.76 Allenby 297.7 62.3 1.75 Mayfair 288.2 69.8 1.71 Appleby 300.6 59.3 1.58 Snyder III 291.8 66.3 1.56 Purdy 295.2 63.4 1.52 Brigman 295.5 63.1 1.5 Bryant 283.2 73 1.49 Rollins 294.4 63.7 1.43 Jobe 302.3 57.3 1.42 Brehaut 286.6 69.9 1.4 Ogilvy 298 60.7 1.4 Henry 297.6 61 1.4 Rose 294.1 63.7 1.37 Westwood 296.8 61.5 1.36 Johnson 290 66.9 1.34 Senden 291 66 1.31 Mickelson 300 58.7 1.3 Watney 298.9 59.4 1.26…