Without performing any calculations, determine which measure of central tendency best represents the graphed data. Explain your reasoning. Q Heart Rates of a Sample of Adults 50- 40- 30- 20- i 10- 0- 55 60 65 70 75 80 85 Heart Rate (beats per minute) kouənbəs

The graph below is a scatter plot between liabilities and assets, bothexpressed in millions.   i. Critically assess this scatter plot explaining about the relationship betweentwo variables.ii. A researcher claims that the correlation is showing that changes in assetscause changes in liabilities. Is he right or wrong? Explain your answer.

The age of adults attending the opening of a new restaurant is displayed in the histogram below. Use the histogram to answer the following questions. 5.0- 4.0- 3.0- 2.0- 1.0- 0- 20 30 40 50 60 70 80 90 100 Age The number of adults attending the opening night is The relative frequency for the adults age 60-70 is (express as a percent) Frequency

The decrease in cholesterol level (in mg/dL) for ten individuals are listed below. Calculate the range of the data. 16     22     17     18     22     19     21     20      18     23

Eyeglassomatic manufactures eyeglasses for different retailers. They test to see how many defective lenses they made the time period of January 1 to March 31. The table gives the defect and the number of defects. Do the data support the notion that each defect type occurs in the same proportion? Test at the 5% level. Number of Defective Lenses Defect type Number of defects Scratch 1866 Right shaped - small 1935 Flaked 1979 Wrong axis 1921 Chamfer wrong 1864 Crazing, cracks 1991 Wrong shape 2004 Wrong PD 1895 Spots and bubbles 1917 Wrong height 1885 Right shape - big 1875 Lost in lab 1886 Spots/bubble - intern 1935   State the hypotheses.H0: Each defect type     in the same proportion.Ha: Each defect type     in the same proportion. Calculate the χ2 test statistic. Round expected values to two decimal places. Round χ2 to three decimal places.χ2 =  Calculate the p-value. Round to four decimal places.p-value =  State your decision.Since p-value     0.05,…

Would it be OK to use the line to predict the age of the wife if the husband is 80 years old? Explain your answer.

Researchers wondered whether the size of a person's brain was related to the individual's mental capacity. They selected a sample of 5 females and 5 males and measured their MRI image pixel counts and IQ scores. Females Males MRI IQ MRI IG The data is reported to the right. Complete parts (a) through (d) below 139 858,472 140 955,003 935,494 924,059 1.079.550 1,001.121 Click the icon to view the critical values table. 991,305 138 141 857,782 833,868 790,619 133 135 132 141 135 140 AMRI 1,080,000- AIO 145 AIO 145- AMRI 1,080,000 780,000 130 130 780,000 130 780,000 780,000 130 1,080,000 145 1,080,000 MRI 145 MRI (b) Compute the linear correlation coefficient between MRI count and IQ. Are MRI count and IQ linearly related? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (Round to three decimal places as needed.) A. Yes, MRI count and IQ are linearly related since the linear correlation coefficient is O B. No. MRI count and IQ are not…

Use this data which give the dosage levels for a particular drug and the heart rate measured 30 minutes after taking the drug. Dose (mg) Heart rate 0.125 95 0.20 90 0.25 93 0.30 92 0.35 88 0.40 80 0.50 82 Create a scatter plot.  Use your Ti-84

Based on the line of best fit for the data below, select which choice best predicts the y-value when the x-value is 10. -80 -75 -70 -65 -60 -55- -50+ -45- -40- -35 -30- -25 -20+ -15 -10 -5- 0 O O O O 96 80 91 85 8 10 11 12

Construct a scatter plot from the given points and describe the correlation.