Tax 21.5 23 18 24.5 26.4 19 Usage 1062 631 920 686 736 684 With regards to the previous question, Gas Tax and Fuel Use The data below indicate the state gas tax in cents per gallon and the fuel use per registered vehicle (in gallons). Is there a significant relationship between these two variables at p < .05.?

Using the same data and information. Please answer this: Should you be encouraging or discouraging credit card sales? In answering this question, consider the following: Is the proportion of credit and non-credit sales significantly different? (a=.05) Is the average sale amount for credit sales different than the average sales amount for non-credit sales? (a=.05)

Copy and paste Excel output and answer questions   1. Median Income and Median Home Price in Selected Eastern Cities (n = 34)                           City Income Home   Alexandria, VA 59.976 290.000   Bernards Twp., NJ 112.435 279.900   Brentwood, TN 107.866 338.250   Bridgewater, NJ 93.484 316.000   Cary, NC 77.091 207.000   Centreville, VA 77.243 250.000   Chantilly, VA 94.864 320.000   Chesapeake, VA 53.758 150.000   Collierville, TN 85.716 230.000   Columbia, MD 77.033 199.000   Coral Springs, FL 62.632 218.500   Dranesville, VA 109.502 290.000   Dunwoody, GA 86.971 315.000   Ellicott City, MD 83.583 248.000   Franconia, VA 84.537 290.000   Gaithersburg, MD 64.944 220.000   Hoover, AL 64.431 170.450   Hunter Mill, VA 93.987 290.000   Lower Makefield Twp., PA…

Which of the following is not equivalent to the other three? Choose the correct answer below. O Dependent variable Independent variable 000 O Predictor variable O Explanatory variable

use the OLS approach to estinstimate relationship between maize yields and fertilizer applications given the table below; interpret your results. maize yields; 31, 36, 29, 34, 62, 60, 45, 31, 42, 48 fertilizer; 23, 25, 19, 35, 32, 54, 26, 20, 18, 23

The weights​ (in pounds) of 6 vehicles and the variability of their braking distances​ (in feet) when stopping on a dry surface are shown in the table. Can you conclude that there is a significant linear correlation between vehicle weight and variability in braking distance on a dry​ surface? Use α=0.01. ​Weight, x 5980 5340 6500 5100 5860 4800   Variability in braking​ distance, y 1.76 1.98 1.92 1.61 1.66 1.50 Setup the hypothesis for the test. Find the crtical value Find the test statistic Interpret the claim

The college physical education department offered an advanced first aid course last summer. The scores on the comprehensive final exam were normally distributed, and the z-scores for some of the students are shown below. Robert 1.12 Juan 1.68 Haley −2.06 Joel 0.00 Jan −0.68 Linda 1.50 (a) Which of these students scored above the mean? (Select all that apply.) Robert Juan Haley Joel Jan Linda (b) Which of these students scored on the mean? (Select all that apply.) Robert Juan Haley Joel Jan Linda (c) Which of these students scored below the mean? (Select all that apply.) Robert Juan Haley Joel Jan Linda (d) If the mean score was μ = 144 with standard deviation σ = 21, what was the final exam score for each student? (Round your answers to the nearest whole number.) Robert Juan Haley Joel Jan Linda

Speed cameras (SC) are used to reduce the risk of accidents in accident-prone zones in metropolitan cities. To study the effectiveness of speed cameras, transport engineers would like to compare the average number of accidents in junction A (with SC) and junction B (without SC). The number of accidents in 105 weeks in two junctions are provided below. 6 7+ Number of Accidents 0 1 2 3 4 5 Observed frequency 40 20 15 16 10 3 1 0 Number of Accidents 0 1 2 3 4 5 6 7+ Junction B without SC Observed frequency 25 24 18 15 18 41 0 Junction A with SC Test the average number of accidents per week in junctions A and B are same at the 5% significance level.

your car is more crowded than you think.  table 5.8 reports results from a 1969 personal transportation survey on "home-to-work" trips in metropolitan areas. The survey stated that the average car occupancy was 1.4 people. check that calculation.