A sample of birth weights of 23 girls was taken. Below are theresults (in g):2343.13651.530432570.925552727.129852601.53772.83151.52773.32702.62776.93436.83028.43447.518383356.934053057.13405.53926.32426.7x = 2999.2 gs = 507.72 gUse a 10% significance level to test the claim that thestandard deviation of birth weights of girls is different fromthe standard deviation of birth weights of boys, which is 550g.Round all answers to 3 decimal places if possible.Procedure: Select an answerStep 1. Hypotheses Set-Up:Но:Ho: Select an answerНа:Select an answerThe test isSelect an answer test.Step 2. The significance level is a =Step 3. Compute the value of the test statistic:Select an answer <II

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Answered: A sample of birth weights of 23 girls…

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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130 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week Frequency Relative Frequency Cumulative Frequency 0.1077 14 13 0.1 27 13 40 3 15 0.1154 55 4 19 0.1462 74 5. 21 0.1615 6. 13 0.1 108 22 0.1692 130 a. Complete the table (Use 4 decimal places when applicable) b. What is the cumulative relative frequency for flossing 2 times per week? Submit Question
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.
The relative frequencies are- Response Frequency Relative frequency Las Vegas 1268 12684090=0.310 Orlando 814 8144090=0.199 New York 1148 11484090=0.281 Chicago 539 5394090=0.132 San Diego 321 3214090=0.078 Total 4090 b) What proportion of the tickets were for New York? enter your response here (Round to three decimal places as needed.)
Cumulative frequency Male Beagles 50- 45- 40- 35- 30- 25- 20- 15- 10- 5- 0- 19.5 22.5 25.5 28.5 31.5 34.5 Weight (in pounds) 55-
110 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week Frequency Relative Frequency Cumulative Frequency 14 0.1273 14 1 14 0.1273 28 2 10 0.0909 38 3 58 4 11 0.1 69 5 7 0.0636 76 6. 17 0.1545 7 17 0.1545 110 a. Complete the table (Use 4 decimal places when applicable) b. What is the cumulative relative frequency for flossing 7 times per week? Hint: Frequency Tables
The following is a distribution representing the weights (in kg) of 25 female junior high school students.
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
Listed below are pulse rates (beats per minute) from samples of adult males and females. Find the mean and median for each of the two samples and then compare the two sets of results. Does there appear to be a difference? Male: 90 53 58 83 62 54 59 70 61 73 57 67 53 96 69 Female: 91 85 93 85 81 88 88 87 94 72 67 86 80 79 77 Find the means. The mean for males is beats per minute and the mean for females is beats per minute. (Type integers or decimals rounded to one decimal place as needed.)
In a student survey, forty-one part-time students were asked how many courses they were taking t The (incomplete) results are shown below: Please round your answer to 4 decimal places for the Relative Frequency if possible. # of Courses Frequency Relative Frequency Cumulative Frequency 1 12 12 0.3415 26 3 15 0.3659 What percent of students take exactly one courses? Submit Question M. Chp -> Ca 2$ & 3. 4. 7 8 9. y d f g 13 <6
5) The data below shows the weight of 36 bags of flour 501 500 502 501 507 496 499 503 499 500 498 498 499 505 503 502 511 499 499 498 490 513 505 502 507 500 505 501 499 507 493 494 499 505 496 488 a. Construct a frequency distribution table, a histogram and a cumulative frequency curve b. Use these to estimate the mode, median and the mean.
The table below shows the frequency distribution of the weights (in grams) of pre-1964 quarters. Choose the correct histogram below. Weight (g) Frequency A. 6.000-6.049 2 15- 6.050-6.099 10- 6.100-6.149 7 6.150-6.199 10 6.200-6.249 11 6.1 6.2 6.3 6.4 6.250-6.299 Weight (grams) 6.300-6.349 6.350-6.399 1 20- 15- 10- Use the frequen distribution? Why or why not? distribution to construct a histogram. Does the histogram appear to depict data that have a normal 6. 6.1 6.2 6.3 6.4 Weight (grams) C. 15- 10- 6.1 6.2 6.3 6.4 Weight (grams) Does the histogram appear to depict data that have a normal distribution? A. The histogram appears to depict a normal distribution. The frequencies generally increase to a maximum and then decrease, and the histogram is roughly symmetric. B. The histogram does not appear to depict a normal distribution. The frequencies generally decrease to a minimum and then increase, and the histogram is roughly symmetric. C. The histogram does not appear to depict a normal…
130 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week Frequency Relative Frequency Cumulative Frequency 18 0.1385 18 1 21 0.1615 39 2 20 59 3 15 0.1154 4 16 0.1231 90 10 0.0769 100 6 0.1231 116 7 14 0.1077 130 a. Complete the table (Use 4 decimal places when applicable) b. What is the cumulative relative frequency for flossing 5 times per week?

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