23. Nutrition. As people age, their daily caloric needs change. The following table shows data for physically ac tive females, relating age, in years, to number of calorie needed daily. NUMBER OF CALORIES AGE NEEDED DAILY 6 1800 11 2200 16 2400 24 2400 41 2200 (Source: Based on data from U.S. Department of Agriculture.) a) Make a scatterplot of the data. b) Do the data appear to fit a quadratic function? c) Using the data points (6, 1800), (16, 2400), and (41, 2200), find a quadratic function that fits the data. d) Use the function from part (e) to predict the number of calories needed daily by a physically active 30-yr- old woman. e) What restrictions are reasonable for the domain of the function from part (c)? Why?

14. The following table gives the miles per gallon and the load capacity for 6 SUV's. Miles per Gallons Load Сарacity 19 860 17 970 16 1035 16 1165 14 1180 13 1360 a. Develop a scatter diagram for the data. b. How would you characterize the relationship between miles per gallon and load capacity?

Please answer all these questions.

mpute Marshall – Edgeworth price index number for the following data by taking 2016 as base year. Items sold out in a men's wear 2017. 2016 GRSH Prices Quantity Quantity Prices Shirts 900 175 700 150 Pants 1200 150 1000 100 Sandals 600 100 500 70 Shoes 1800 60 1500 50 150 Belts Watches 400 100 600 250 300 1500 1200

1. Identify whether the variable in the information below is qualitative or quantitative. A nurse collects blood from kids and measure their blood-sugar content. This measure of blood-sugar concentration is a variable. a. quantitative b. qualitative c. qualitative as well as quantitative d. neither qualitative nor quantitative 2. Identify the technique for gathering data in the study below. A pharmaceutical firm wants test the effectiveness of a new drug. It wants to know if the new drug is significantly stronger than the conventional drug. This is a/an study. a. observational b. experimental c. census d. sampling 3. You want to plot a frequency graph of daily rainfall, with rainfalls (inches) on the horizontal axis. You will use a a. bar chart b. histogram c. cumulative frequency d. best fit line 4. Frequency of categorical data are displayed using a a. bar chart b. histogram c. time series graph d. best fit line

An engineer wants to determine how the weight of a gas powered car, x, affects gas mileage, y. The accompanying days represent the weights of various domestic cars and their miles per gallon in the city for the most recent model year. weight                    Miles per (pounds), x           Gallon, y 3797                             16 3897                             16 2704                             24 3608                             20 3360                             22 3040                             22 3787                              17 2618                              24 3509                             18 3798                             16 3399                             17   interpret the slope y-intercept, if appropriate. Choose the correct answer below for y hat = -0.00661x + 41.80 a) A weightless car will get ____ miles per gallon, on average. It is not appropriate to interpret the slope.  b) for every pound added to the weight of the car, mileage in the city will…

Johnson Wholesale Company manufactures a variety of products. The prices and quantities produced for April 2010 and April 2019 are:    2010 2019 2010 Quantity 2019 Quantity Product Price Price Produced Produced Small motor (each) $ 23.92   $ 28.29     1,413     4,234   Scrubbing compound (gallon)   2.32     3.70     86,827     62,984   Nails (pound)   0.19     0.86     9,332     22,336           Click here for the Excel Data FileUsing April 2010 as the base period, find the value index of goods produced for April 2019. (Round your answer to 2 decimal places.)

Table 9.3 Total cholesterol in 25 patients after taking new statin drug. .. Population mean is 200. Cholesterol levels 219 191 198 214 163 264 248 182 235 209 152 148 145 189 213 230 181 180 100 219 102 249 282 188 264 D. b. Describe the effects of the statin drug on your sample. Do you see any change in the level of cholesterol after taking the drug? c. What is your research question? What are the null and alternative hypotheses? Decide if you want to do a one-tailed or two-tailed test. d. What test? Perform it? What is your critical value? Sketch a normal distribution and draw the critical value or values of z. f. What is your conclusion?