A recent study investigated tractor skidding distances along a road in a forest. The skidding distances (in meters) were measured at 20 randomly selected road sites. The data are given in the accompanying table. A logger working on the road claims that the mean skidding distance is at least 425 meters. Is there sufficient evidence to refute this claim? Use a = 0.05. Click the icon to view the table. State the hypotheses to test if there is sufficient evidence to refute the claim that the mean skidding distance is at least 425 meters. Choose the correct answer below. А. Но: и 3D425 Ha: H#425 В. Но: и3 425 Hgi H<425 Data Table O C. Ho: H= 425 Ha: µ > 425 D. H : μέ 425 Hai H = 425 Calculate the value of the test statistic. 484 349 451 197 287 414 443 583 436 562 376 290 178 269 281 392 316 311 138 437 t = (Round to two decimal places as needed.) Calculate the p-value. Print Done p-value = (Round to four decimal places as needed.) Make the appropriate conclusion. Choose the correct answer below. O A. Do not reject Ho. There is insufficient evidence at the a = 0.05 level of significance to conclude that the true mean skidding distance is less than 425 meters. Thus, there is not enough evidence to refute the claim. B. Do not reject Ho. There is sufficient evidence at the a = 0.05 level of significance to conclude that the true mean skidding distance is less than 425 meters. Thus, there is enough evidence to refute the claim. O C. Reject Ho. There is insufficient evidence at the oa = 0.05 level of significance to conclude that the true mean skidding distance is less than 425 meters. Thus, there is not enough evidence to refute the claim. O D. Reject Ho. There is sufficient evidence at the a = 0.05 level of significance to conclude that the true mean skidding distance is less than 425 meters. Thus, there is enough evidence to refute the claim.

An agent for a residential real estate company in a suburb located outside a major city has the business objective of developing more accurate estimates of the monthly rental cost for apartments. Toward the g the agent would like to use the size of an apartment, as defined by square footage to predict the monthly rental cost. The agent selects a sample of 8 one-bedroom apartments and the data are shown. Comple parts (a) through (f). a. Construct a scatter plot. Choose the correct graph below. O A. 2,000 ★Rent ($) → 2,000 Size (sq ft) Q O B. ★Rent ($) 2,000+ to Monthly Rent ($) Size (Square Feet) 0 S 1.₂ 2,000 Size (Sq ft) Q Q □ b. Use the least-squares method to determine the regression coefficients bo and b₁. 900 1,600 825 1,450 1,900 975 1,825 1,300 900 1,200 1,050 1,200 1,900 700 1,350 1,100 bo = (Round to one decimal place as needed.) b₁ = (Round to one decimal place as needed.) c. Interpret the meaning of bo and b₁ in this problem. Choose the correct answer below. (---) O C. 2,000…

Use the following information to answer the question. Many couples believe that it is getting too expensive to host an "average" wedding in the United States. According to the website www.costofwedding.com,theaveragecostofaweddingintheU.S.in 2009 was $24,066. Recently, in a random sample of 40 weddings in the U.S. it was found that the average cost of a wedding was $23,224, with a standard deviation of $2,903. On the basis of this, a 9 5% confidence interval for the mean cost of weddings in the U.S. is $22,296 to $24,152. Does the confidence interval provide evidence that the mean cost of a wedding has decreased? Explain your reasoning.

In a 2014 study, Michael Smith arranged to be stung by bees repeatedly on 25 locations over 38 days to record the relative pain experienced by each sting in each body area. A scale pain ratings of 1-10 were used with stings to the forearm defined to be a 5. What is the population of this study?