From the data on the pH of rain in Ingham County, Michigan:5.47 5.37 | 5.38 4.63 5.37 3.74 3.71 4.96 4.64 5.11 5.655.39 4.16 5.62 4.57 4.64 5.48 4.57 4.57 4.51 4.86 4.564.61 4.32 3.98 5.70 4.15 3.98 5.65 3.10 5.04 4.62 4.514.34 4.16 4.64 5.12 3.71 4.64What proportion of the samples has pH below 5.0?

Answered: Image /qna-images/answer/716d6c5e-e901-418c-8019-016e1310f6fb.jpg

Answered: From the data on the pH of rain in…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The following marks were recorded on a test. 82 97 59 67 93 92 99 96 68 85 55 74 89 86 62 72 75 81 79 88 a) Create a frequency table b) Create a histogram c) Describe the shape of the distribution Please write clearly thank you. *If possible to make the histogram digital and not drawn.
From these values, construct a grouped cumulative frequency distribution. 100 91 65 96 102 105 100 125 115 102 100 71 85 122 90 108 101 105 100 89 114 109 111 135
The following data represents the body temperature in degrees Fahrenheit of randomly selected adults: 98, 99.2, 98.6, 98.2, 98.6, 98.5, 98.4, 98.1, 99.1, 99, 98.698, 99.2, 98.6, 98.2, 98.6, 98.5, 98.4, 98.1, 99.1, 99, 98.6 Use Excel to compute the values indicated below. Express your answers rounded to the nearest tenth. Mean: Standard Deviation: Use the 68-95-99.7 Rule to answer the following question.What is the probability of a body temperature less than 99.8 ? Express your answer rounded to four decimal places.
A random sample of soil specimens was obtained, and the amount of organic matter (%) in the soil was determined for each specimen, resulting in the accompanying data. 1.18 5.09 0.97 1.59 4.60 0.32 0.55 1.45 0.17 4.47 1.20 3.50 5.02 4.67 5.22 2.69 3.92 3.17 3.03 2.21 0.69 4.47 3.31 1.17 0.70 1.17 1.57 2.62 1.66 2.05 The values of the sample mean, sample standard deviation, and (estimated) standard error of the mean are 2.481, 1.612, and 0.294, respectively. Does this data suggest that the true average percentage of organic matter in such soil is something other than 3%? Carry out a test of the appropriate hypotheses at significance level 0.10. [Note: A normal probability plot of the data shows an acceptable pattern in light of the reasonably large sample size.] State the appropriate hypotheses. O Ho: μ # 3 Ha: μ 3 USE SALT t = Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to three decimal places.) P-value = What…
The following table lists average high temperatures (° F) in January and in July for selected cities in the United States: Jan. hi. 45.9 July hi. 89.5 City July hi. City Nashville Jan. hi Atlanta 50.4 88 Baltimore 40.2 87.2 New Orleans 60.8 90.6 Boston 35.7 81.8 New York 37.6 85.2 Chicago 29 83.7 Philadelphia 37.9 82.6 Cleveland 31.9 82.4 Phoenix 65.9 105.9 Dallas 54.1 96.5 33.7 82.6 Pittsburgh St. Louis Salt Lake City San Diego Denver 43.2 88.2 37.7 89.3 Detroit 30.3 83.3 36.4 92.2 Houston 61 92.7 65.9 76.2 Kansas City Los Angeles 34.7 88.7 San Francisco 55.6 71.6 65.7 75.3 Seattle 45 75.2 Miami 75.2 89 Washington 42.3 88.5 Minneapolis 20.7 84 Which dataset exhibits more dispersion: the Jan. hi data or the July hi data? Explain your reasoning.
A sample of birth weights of 48 girls was taken. Below are the results (in g): 2724.5 3340.1 3243.6 3442.1 2996.9 3042 3505 3161.8 4022.8 3362.9 3768.9 2951.9 3229.7 2997.5 3758.1 3350.2 3210.7 3684.3 3530.1 3132.7 2776.9 3492.7 2655.1 3790.9 3064.6 3744.6 3294.5 2654.7 3536.6 2781.1 3756.3 3531.5 3654.2 3505.1 4018.6 3038 3202.3 3006 3701.6 3451.4 2986.5 3541.2 3232.9 2966 3186 3550.3 3056.6 3467.1 x = 3314.6 g s = 347.35 g Use a 5% significance level to test the claim that the standard deviation of birth weights of girls is less than the standard deviation of birth weights of boys, which is 530 g. Round all answers to 3 decimal places if possible. Procedure: Select an answer Step 1. Hypotheses Set-Up: %3D Ho: Select an answer На: Select an answer The test is a Select an answer O test. Step 2. The significance level is a = Step 3. Compute the value of the test statistic: Select an answer >
The following data represent the precipitation totals (in inches) for a 6-month period in 24 different locations of a US State. 10.7 8.6 10.8 8.8 9.9 7.5 8.7 6.5 6.6 9.8 7.7 7.9 9.6 10.9 9.9 9.6 6.7 8.6 10.7 8.8 9.4 8.2 10.5 7.1 a. Create an ordered stem-and-leaf plot for the data. After creating the ordered stem-and-leaf plot, answer the questions below. b. How many data points are greater than 9.5 inches? c. How many data points are less than 10.0 inches? d. How many data points are between 8.9 and 10.1 inches?
The height of 100 students in a school was recorded and the following frequency distribution was obtained: Height (in cm) Frequency 140-149 12 150-159 20 160-169 30 170-179 25 180-189 13 What is the mean height of these 100 students?
The following data represent tree trunk circumferences (in mm) foa a random sample of 60 6-year old Mahogany trees in a man-made forest in Bohol. 108 99 106 102 115 120 120 117 122 142 106 111 119 109 125 108 116 105 117 123 103 114 101 99 112 120 108 91 115 109 114 105 99 122 106 113 114 75 96 124 91 102 108 110 83 90 69 117 84 142 122 113 105 112 117 122 129 100 138 117 (a) Make a frequency table with seven classes showing class limits, class boundaries, midpoints, frquencies, and relative frequencies. (b) Draw a histogram (c) Draw an ogive
A sample of birth weights of 23 girls was taken. Below are the results (in g): 2343.1 3651.5 3043 2570.9 2555 2727.1 2985 2601.5 3772.8 3151.5 2773.3 2702.6 | 2776.9 3436.8 3028.4 3447.5 1838 3356.9 3405 3057.1 3405.5 3926.3 2426.7 * = 2999.2g s = 507.72 g Use a 10% significance level to test the claim that the standard deviation of birth weights of girls is different from the standard deviation of birth weights of boys, which is 550 g. Round all answers to 3 decimal places if possible.
b?
A sample of birth weights of 38 girls was taken. Below are the results (in g): 4002.7 3558.2 31 3104.4 3405.2 3094.4 3145.7 2903.5 3641.1 3530.4 2348.2 3027.4 3542.7 2151.5 3583.6 3280.3 4072.1 2989.5 3595.1 2444.4 3537.2 1969 3720.5 3440.5 3395.8 3323.1 3475.6 3159.5 3099.8 3070.7 2838.1 2997.8 2584 2577 2850.5 2995.6 2940.9 3845.8 3173.6 (Note: The average and the standard deviation of the data are respectively 3168.8 g and 480.8 g.) Use a 1% significance level to test the claim that the standard deviation of birthweights of girls is less than the standard deviation of birthweights of boys, which is 510 g. Procedure: Select an answer Assumptions: (select everything that applies) Population standard deviation is unknown The number of positive and negative responses are both greater than 10 O Population standard deviation is known Normal population Sample size is greater than 30 Simple random sample

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