Researchers conducted a study to determine whether magnets are effective in treating back pain. Pain was measured using the visual analog scale, and the results shown below are among the results obtained in the study. Higher scores correspond to greater pain levels. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) to (c) below. Reduction in Pain Level After Magnet Treatment (₁): n=24, x=0.56, s=1.04 Reduction in Pain Level After Sham Treatment (p₂): n=24, x=0.49, s= 1.56 a. Use a 0.05 significance level to test the claim that those treated with magnets have a greater mean reduction in pain than those given a sham treatment (similar to a placebo). What are the null and alternative hypotheses? OA H₂: H₁ = 1/2 H₂H4₂ OC. H₂: H₁ = 4/2 H₂: Hy #1₂ The test statistic, t, is. (Round to two decimal places as needed.) The P-value is. (Round to three decimal places needed.) State the conclusion for the test. OB. Ho: P₁ P₂ H₁ H₁ H₂ the null hypothesis. There b. Construct a confidence interval appropriate for the hypothesis test in part (a).

Hello. How do you calculate this question on a TI-83? Thanks.

View the attatched photo and then answer the questions below. Thank you :) Min = ? Quartile 1 (Q1) =? Quartile 2 (Q2) = ? Quartile 3 (Q3) = ? Max = ?

The data below is 12 observations of Math SAT scores (x) and scores on Math placement test (y). Calculate the linear correlation coefficient, r. Enter your answers to two decimal places. Y 580 619 510 476 590 506 550 469 450 523 470 392 500 508 440 462 600 625 530 569 410 346 430 508 Question Help: Message instructor Submit Question Chp Ce %23 7 8. 9. W <6 64

Listed below are the budgets​ (in millions of​ dollars) and the gross receipts​ (in millions of​ dollars) for randomly selected movies. Answer parts ​a-c. Budget (x)    Gross (y)60    6091    6050    4839    62193    558105    14087    52 a. Find the value of the linear correlation coefficient r.

The authors of a paper presented a correlation analysis to investigate the relationship between maximal lactate level x and muscular endurance y. The accompanying data was read from a plot in the paper. X 390 740 760 y 3.90 r 3.90 5.00 5.30 4.10 3.60 6.20 OH₂: P = 0 Ha: P 0 1,465 1,470 1,495 2,190 t = P-value = 6.98 7.45 4.85 7.70 4.55 6.70 8.80 OH₂: P = 0 H₂: P = 0 Compute the value of the sample correlation coefficient, r. (Round your answer to four decimal places.) Calculate the test statistic and determine the P-value. (Round your test statistic to one decimal place and your P-value to three decimal places.) State the conclusion in the problem context. O Fail to reject Ho. A positive correlation exists between maximum lactate level and muscular endurance. Reject Ho. A positive correlation exists between maximum lactate level and muscular endurance. O Fail to reject Ho. A positive correlation does not exist between maximum lactate level and muscular endurance. O Reject Ho. A…

Match the following values of the correlation coefficients with the proper scatter plots below.

The data below is 12 observations of Math SAT scores (x) and scores on Math placement test (y). Calculate the linear correlation coefficient, rr. Enter your answers to two decimal places. X Y 420 426 410 360 600 575 460 538 550 553 480 407 560 635 450 388 400 383 430 402 470 462 440 437 rr =

State Debt and Per Capita Tax Data for per capita state debt and per capita state tax for nine randomly selected states are shown. The correlation coefficient is r=0.463. Compute the standard error of the estimate rounded to at least two decimal places, if appropriate. Assume a=0.05. Per capita debt x Per capita tax y Send data to Excel 4529 1455 2349 3478 1948 2387 2423 3357 1645 1430 O The standard error of the estimate should be calculated. Sest O The standard error of the estimate should not be calculated. X 1902 3691 1913 2054 2069 2049 3 907 2054

In the US, 46.2% of all people have type O blood, 39.1% have type A blood, 10.4% have type B blood and 4.3% have type AB blood. A researcher wants to see if the distribution of blood type is different for millionaires. The table below shows the results of a random sample of 3116 millionaires. What can be concluded at the a = 0.01 significance level? a. Complete the table by filling in the expected frequencies. Round to the nearest whole number: Frequencies of Blood Type Outcome Frequency Expected Frequency 1434 A 1224 В 310 AB 148 b. What is the correct statistical test to use? Select an answer V c. What are the null and alternative hypotheses? Но: O Blood type and income are independent. O The distribution of blood type for millionaires is not the same as it is for Americans in general. O The distribution of blood type for millionaires is the same as it is for Americans in general. O Blood type and income are dependent.