The following data on price ($) and the overall score for 6 stereo headphones that were tested by Consumer Reports were as follows. Brand Price ($) Score Bose 192 72 Scullcandy 150 78 Koss 84 60 Phillips/O'Neill 84 60 Denon 84 48 JVC 36 24 Does the t test indicate a significant relationship between price and the overall score? The test t-Conclusion at a = .05 t =   (to 2 decimal places.) Show the ANOVA table for these data. Round your answers to three decimal places, if necessary. Source of Variation Sum of Squares Degrees of Freedom Mean Square F   Regression           Error           Total

A runner states that his average time for running a mile is 6.5 minutes.  Given the following times from 8 recent mile runs, test the claim that his  actual average is not what he states it to be at the a = 0.05 level of  significance.  6.25    6.6    6.8    7.2    6.3    7.0    6.5    6.75

Below is a histogram of the current prices of different varieties of face masks, with a skewness of measure of -1.380. Based on your knowledge of graph shape, approximate the mean (average) cost of a box of masks. Count 15 10 5 0 T 20 37$ per box of 24 $8 per box of 24 49$ per box of 24 24$ per box of 24 Current price of a box of 24 facemasks 25 30 Price 35 40 45

To examine the linear correlation between adult age and weight, data was collected from 8 adults. See the table below. Age Weight (Years) (pounds) 35 223 38 231 48 121 50 148 52 219 55 210 56 132 57 218 Does this result suggest that the correlation is statistically significant? Use a = 0.10. Important Note: Round your value for r to three decimals before computing the STS. DO NOT use the built- in LinRegTTest on a calculator because you might get marked wrong. When computing the P-value, use the rounded STS. 1. Select the correct statement: O Even if the correlation is found to be statistically significant, that does not necessarily mean that changes in x cause changes in y O If the correlation is found to be statistically significant, that means that changes in x cause changes in y The hypotheses are: O Ho:r = 0; Ha:r#0 O Ho:r 0 O Ho:p = 0; Ha:p+ 0 O Ho:p 2 0; Ha:p 0 O Ho:r > 0; Ha:r <0 MacBook Air 20 F3 000 11 F8 F4 F5 F6 F7 F9

Refer to the figure at the right. At a= 0.10, can you reject the claim that the proportion of 18 to 24-year-olds living in their parents' homes in 2000 was the same for men and women? Assume the survey included a random sample of 270 men and 278 women. Percentage of 18- to 24-year olds living in parents' homes 70, 60.4% 45% 54.6% 50.3% 2000 2012 Men Women Identify the null and alternative hypotheses. Choose the correct answer below. O B. Ho: P, * P2 Ha: P1 = P2 OD. Ho: P1 > P2 YA. Ho: P1 = P2 H3: P, * P2 OC. Ho: P, P2 Ha: P, SP2 Find the critical value(s). The critical value(s) is(are). (Round to two decimal places as needed. Use a comma to separate answers as needed.)

Use the t3 I calculator.