The following table gives information on the amount of sugar (in grams) and the calorie count in one serving of a sample of 6 varieties of granola bars. Sugar (grams) Calories 4 120 12 8 7 14 6 140 120 180 190 80 a. Decide which variable should be the independent variable and which should be the dependent variable. Justify your decision. b. Compute ΣΧ, ΣΧ2, ΣΥ, ΣΥ? and ΣΧΥ c. Find and interpret the slope of the regression line. d. Find and interpret the intercept of the regression line. e. Write down the regression equation.

A     marketing     manager     conducted     a     study     to     determine     the     relationship     between    money    spent    on    advertising    (X)    and    company    sales    (Y).        The    study    consisted    of    8    companies    and    the    data    is    given    below    and    is    in    units    of    $1000s    (ie.    2.4    =    $2400.00) a. Report    dependent    and    independent    variables    in    this    study.    Independent    variable:    ________________________________________________________________Dependent    variable:    __________________________________________________________________Both    variables    are    what    type    of    data? [Circle    one:]            Numerical                            Categoricalb. Write    out    the    linear    model/regression    equation    using    the    average    money    spent    on    advertising    to    predict    the    company    sales.        Do    not    round.  c. Find     the…

Cuckoos Cuckoos lay their eggs in the nests of other(host) birds. The eggs are then adopted and hatched by the host birds. But the potential host birds lay eggs of dif-ferent sizes. Does the cuckoo change the size of her eggs for different foster species? The numbers in the table arelengths (in mm) of cuckoo eggs found in nests of threedifferent species of other birds. The data are drawn from the work of O.M. Latter in 1902 and were used in a fun-damental textbook on statistical quality control by L.H.C. Tippett (1902–1985), one of the pioneers in that field.Investigate the question of whether the mean length ofcuckoo eggs is the same for different species, and stateyour conclusion. Cuckoo Egg Length (MM)Foster Parent SpeciesSparrow Robin Wagtail20.85 21.05 21.0521.65 21.85 21.8522.05 22.05 21.8522.85 22.05 21.8523.05 22.05 22.0523.05 22.25 22.4523.05 22.45 22.6523.05 22.45 23.0523.45 22.65 23.0523.85 23.05 23.2523.85 23.05 23.4523.85 23.05 24.0524.05 23.05 24.0525.05 23.05 24.0523.25…

Hookworms are parasitic nematodes that live in the intestines of a host. Hookworms do their damage (often fatally) by draining blood from the intestinal wall. The data below correlate the number of hookworms and the amount of blood lost by that number of worms. (Include units below if applicable. If necessary, use a separate sheet of paper for 6c and 7c.) Number of hookworms (x) Blood lost per day (y) 24 12.2 mL 5 2.48 cm3 45 1.37 in3 88 1.49 oz 80 39.8 cm3 63 31.5 mL 1) Inspect the data and estimate the amount of blood lost due to one hookworm. (mL/day)

use the excel data G H M 1 Columni Column2 Columna Column4 Columns Columne Columne 2. Column7 Column Column10 Column11 Column12 Column13 Column14 6.1 9.4 8.1 3.2 6.5 7.2 7.8 4.9 3.5 6.6 6.1 5.1 4.9 4.2 3 6.4 8.1 6. 8.2 6.8 5.9 5.2 4. 6.5 5.4 5.9 9.3 5.4 6.5 7.4 12.4 6.8 5.6 5.8 6.2 5.6 6.4 9.5 7.2 5.6 4.7 4.5 6. 7.7 6.9 5.4 6.3 8.1 4.9 5.3 4.7 5.7 4.9 5.3 6.4 7.5 4.4 4.9 7.6 3.6 8.3 5.6 6.2 7.4 7.4 5.2 6.5 6.2 4.8 6.2 4.9 6. 7.7 4.7 9. 5.7 7.1 5.6 10 4.9 7.8 7.1 7.1 11.5 5.4 5.2 11 6.1 6.8 5.4 3.5 7.1 5.7 5.4 12 5.3 5.0 5.2 6.4 4.5 5.1 5.6 6.1 13 8.1 A.1 5.1 8.3 7.5 7.5 7.6 10.9 6.5 5.9 6.8 6.5 14 5.8 6.4 4.7 4.5 6.2 5.2 7.9 5.5 4.9 7.2 4.9 4.5 15 6.3 8.3 5.5 7.8 5.4 5.3 6.6 3.6 7.3 5.3 8.9 6.8 7.1 8.7 16 6.4 3.3 7.7 6.7 7.6 7.6 7.1 5.6 5.9 4.1 7.5 7.7 5.4 17 4.8 5.5 8.8 7.2 6.3 10 4.3 4.9 5.7 5.1 6.7 5.6 7.2 18 7.8 6.3 6.1 8.4 19 5.7 6.1 4.2 20 Question 3 Use Excel statistical functions on this data set. Make sure you have reformatted the data to not include blank cells. What is the…

Need step (if handwriting neat and clear,thank you)

I. COEFFICIENT OF VARIATION ( The table shows the population height (in meters) and volume (in cubic meters) of the drums used in a factory. Find the coefficient of variation for the height and volume, then compare the results and interpret. Height Volume 0.5 07 0.75 RE 55 1.5 12 2 14 0.5 8

1. The grades of a class of 9 students on a midterm report and on the final examination are as follows: MR 77 50 71 72 81 94 96 99 67 FE 82 66 78 34 47 85 99 99 68 A. What is the dependent and independent variable? B. Pearson'sr= Interpret: C.r-square = Interpret:

Running Shoes. A shoe designer tests a new material for the soles of their most popular line of running shoes. She has 6 athletes run 100 miles with one of last years shoes and one of these new shoes, randomly assigning the new shoe to the left or right foot. Afterward, she measures the amount of wear on each of the shoes in millimeters. Test the claim that the amount of wear with the new material is different from the amount of wear with the old material. Runner 4 1 2 3 1.14 1.04 1.08 1.09 New Material Wear Old Material Wear 1.03 0.87 0.96 1.01 (b) Write the hypotheses in symbols. Ho: Hdiff-new-old = 0 Ha: Hdiff-new-old > 0 O Ho: Pdiff-new-old (a) Why are these paired data? O The top and bottom values in each column are from the same runner. Runners typically run in groups of two. There are an equal number of shoes of each type. This table does not have paired data; there is no clear relationship between the top and bottom values in any column. Each runner has a pair of shoes. -0 Ha:…

*. Baseball pitchers try to prevent hitters from reaching base. One way to measure the eflectiveness of a pitcher is WHIP, which is calculated by the formula: walks + hits WHIP innings pitched The table shows the age and WHIP for all 17 vears of Bob Gibson's MLB hall-of-fame career. Age WHIP Age WHIP Age WHIP 23 1.533 29 1.157 35 1.185 24 1.673 30 1.027 36 1.129 25 1.443 31 1.089 37 1.108 26 1.151 32 0.853 38 1.417 27 1.257 33 1.102 39 1.670 28 1.169 34 1.190 (a) Use the calculator to find a quadratic model for these data using age as the explanatory variable. (b) Sketch the scatterplot, along with the quadratic model. (c) Calculate and interpret the residual for observation when Bob was 24 years old."