(9. Compute the rank correlation between IQ's and marks scored in examination. Personal: A B C E F LQ: 100 110 140 160 120 130 Exam mark: 70 80 81 78 72 75
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- The authors of a paper presented a correlation analysis to investigate the relationship between maximal lactate level x and muscular endurance y. The accompanying data was read from a plot in the paper. X 390 740 760 y 3.90 r 3.90 5.00 5.30 4.10 3.60 6.20 OH₂: P = 0 Ha: P 0 1,465 1,470 1,495 2,190 t = P-value = 6.98 7.45 4.85 7.70 4.55 6.70 8.80 OH₂: P = 0 H₂: P = 0 Compute the value of the sample correlation coefficient, r. (Round your answer to four decimal places.) Calculate the test statistic and determine the P-value. (Round your test statistic to one decimal place and your P-value to three decimal places.) State the conclusion in the problem context. O Fail to reject Ho. A positive correlation exists between maximum lactate level and muscular endurance. Reject Ho. A positive correlation exists between maximum lactate level and muscular endurance. O Fail to reject Ho. A positive correlation does not exist between maximum lactate level and muscular endurance. O Reject Ho. A…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…The grades for 20 students on the most recent exam are given in the data table below. Round your answers to 2 decimal places as needed 46 71 41 94 50 47 85 86 98 72 82 40 47 80 44 89 61 66 81 96 Mean = Median = Standard deviation = Minimum score = Highest score =
- Here is a bivariate data set. x y 74 43 80 45 89 12 72 43 75 37 82 31 79 60 57 68 71 34 Find the correlation coefficient and report it accurate to four decimal places.r =*8. Calculate the coefficient of correlation between X and Y from the following data and calculate probable error. Assume 69 and 112 as the mean value for X and Y respectively. X : 78 89 99 60 59 79 68 61 Y : 125 137 156 112 107 136 123 108Examine the histogram below. Would you expect the Median to be greater than or less than the mean? 80 60 40 20 4 O Equal To 0 Greater Than O Less Than 40 50 60 70 80 90 100
- A teacher wants to assign an 'A' grade to everyone that scores in the 80th percentile. The grades are: 8 10 12 15 25 40 50 55 60 75 85 90 What is the 80th percentile value What is the meaningA food truck owner recorded the temperature at noon, in degrees Fahrenheit, and the number of bowls of soup sold during the lunch hour for a random sample of 5 days. The data are shown in the following table. Temperature (degrees Fahrenheit) 57 75 43 68 67 Number sold 17 12 20 8 13 The mean temperature of the sample is 62 degrees Fahrenheit, and the mean number sold is 14. What is the correlation between the temperature and the number sold? A -0.85 B -0.68 0.68 D 0.73 E 0.85Use the first 30 data values. Test, at the 5 percent level of significance, the hypothesis that men's and women's mean (a) Cholesterol are equal. (b) Blood pressure are equal. Student Cholesterol Pressure Gender 1 213 127 2 174 116 M 3 193 110 F 196 110 220 130 183 99 M. 194 112 8 200 102 192 121 M 10 200 125 F 11 200 125 M 12 199 133 13 178 130 M 14 183 136 M 15 188 112 16 193 113 17 187 112 F 18 181 129 M 19 193 137 M 20 205 113 M 21 196 113 M 22 211 110 23 202 97 M 24 213 103 25 216 95 26 206 107 M 27 195 102 28 191 111 M 29 194 114 184 104 30
- Below is a histogram of the current prices of different varieties of face masks, with a skewness of measure of -1.380. Based on your knowledge of graph shape, approximate the mean (average) cost of a box of masks. Count 15 10 5 0 T 20 37$ per box of 24 $8 per box of 24 49$ per box of 24 24$ per box of 24 Current price of a box of 24 facemasks 25 30 Price 35 40 45The data below is how much money an ice cream store makes and what the max temperature was at that day. Test the claim that there is no correlation between the two. Use a significance of .05. Temp Dollars (Farenheit) made 81 4145 91 3342 98 4180 105 5121 84 2480 89 3011 94 3630 86 2777 95 3914 103 4798 91 4702 立What is the correlation between the following X scores and Y scores? 76 58 86 -0.86 -0.58 X Y 1 2 2 3 4 2 5 6 8 7 show work
