Comparing scales: In an experiment to determine whether there is a systematic difference between the weights obtained with two different scales, 10 rock specimens were weighed, in grams, on each scale. The following data were obtained: Specimen Weight on Scale 1 Weight on Scale 2 1 11.79 11.83 2 15.22 15.13 3 8.83 9.60 4 11.13 12.10 5 24.59 26.92 6 9.61 10.55 7 14.55 15.01 8 6.99 7.17 9 13.39 14.82 10 20.93 22.45 Send data to Excel Let μ₁ represent the mean weight on Scale 1 and μd=H1-H₂. Can you conclude that the the mean weight on Scale 1 is less than the mean weight on Scale 2? Use the a= 0.05 level of significance and the TI-84 Plus calculator to answer the following. Part 1 of 4 (a) State the null and alternate hypotheses. Ho: "d = 0 H₁: <0 This hypothesis test is a left-tailed Part: 1 / 4 Part 2 of 4 (b) Compute the P-value. Round the answer to at least four decimal places. P-value = .05 X ▼test. S

A researcher measures the relationship between hours worked by employed students and the number of units taken during the first semester of college for each individual in a group of 25 community college students. For this study: a. If we calculate the average hours worked by these community college students, the average would be an example of a ________ statistic b. Is a sample or population being measured here? c. What kind of a research study is this? d. N/n = e. What level of measurement is the number of units taken? Step 2 – check your work! Was your answer correct? If not, please make any correction here: Step 3 - if your answer was incorrect, please write out what was wrong (skip this if you were correct) show working for each

A survey of the opinions of property owners about a street widening project was taken to determine whether the resulting opinion was related to the distance of front footage. A randomly selected sample of 100 property owners was contacted and the results are shown below.                                                     Opinion             Front-Footage                        For                  Undecided                  Against             Under 45 feet                         12                                4                      4             45 – 120 feet                          35                                5                      30             Over 120 feet                         3                                  2                      5   What is the computed value of chi-square?   5.4787 4.9985 9.2784 7.9842 11.0355

Listed below are the measured radiation absorption rates​ (in W/kg) corresponding to 11 cell phones. Use the given data to construct a boxplot and identify the​ 5-number summary.   1.49 0.79 0.72 1.25 0.85 0.84 1.13 0.68 1.43 0.51 1.18         Question content area bottom Part 1 The​ 5-number summary is enter your response here​, enter your response here​, enter your response here​, enter your response here​, and enter your response here​, all in​ W/kg. ​(Use ascending order. Type integers or decimals. Do not​ round.)