hello let me know if you can. read the question 3.23. thank you for your help!
NO VARIATION Female Male Female Male birth weight of 2800 groan (about 6.2 pounds) more than one 82 10.0 9.1 ndard deviation below the meant 95 10.4 9.6 Birth Length The mean birth length for U.S. children 9.7 full term (after 40 weeks) is 52.2 cm (about 20.6 inches). use the standard deviation is 2.5 cm and the distributions art 9.0 10.6 dal and symmetric. (Source: werw.babycenter.com) 8.5 106 79 95 What is the range of birth lengths (in centimeters) of 1.5. horn 8.3 how the mean to one wandand 10.8 R. J JO.D children from one 9.2 R6 meant landard deviation above 9.5 83 9.5 Is a birth length of 54 c 8.7 8.9 95 4.3 the mean? Children's Ages (Example 6) Mrs. Johnson's children are 8.9 8.0 04 , 3, and 5 years of age. on of then current ages. Calculate the of 3.24 Happiness A survey on StalCrunch asked people to report Without doing any calculation, indicate whether the standard their level of happiness from | (least happy) to 100 (most happy). deviation of the age in 20 years will be larger, aller, or the The uble shows a sample of 20 female and 20 male responses. of their current apes. Check. (Source: StarCrunch Responses In Happiness survey. Owner: your answer by calculating the standard deviation of the ages in Webster West adding 20 to each rumisee affects the 20 years. Explain brow a. Make two separate siemplots for dotplots or histograms) (Don't urgent apps forget to show empty worm if you are making a stemplot) Are the C. Find the mean of the child adicate whether the mean ape in distributions skewed? If in, which way? houl doing any cal of about the same as the meas of 3. Compare the mam. 20 years will be larger, smalle and describe how adding c. Compare the standard deviations the current ages. Confirm your 20 to each m 3.20 Pay Rate in Different Currencies The pay rates Female Male Female Make for 3 people were the following numbers of dollars per 35 98 97 how: 8, 105, and 7, In Mexican pesos (if the exchange rate 45 70 is 10 pesos per dollar), these pay rates are 80, 105, and 70 pesa 90 70 per hour. be moin in pews; don't forget Up 95 SEC 1. Compare the me each number in a dula act by 10 does 19 42 11 TRY 3.27 V units Explain what m 85 g rate of to the meat. 70 50 90 h. Compare the starsdied deviation in pros and in dollar. Explain of the a a data set bry 10 does In the standard 80 93 90 Assum what multiplying each m 95 T5 wimod aviation. 3.21 Olympics In the most recent summer Olympics, do 90 76 you think the standard deviation of the runting times for all 65 100 12 men who ran the 100-meter race would be larger or smaller than the standard deviation of the running times for the mea's 3.25 Drinkers The number of alcoholic drinks per week is given for marathon? Explain. 3.22 Weights Suppose you have a data set with the weights of adult men and women who drink. The data are at this text's website. all members of a high school soccer team and all members of a (Source: Alcohol data from adults servey results, accessed via high school academic decathlon team ta learn of stodems selected correctly), Which learn SuadCrunch. Owner: rosesege) because they often answer quiz questions vutica of weights? Compare the mean ber of drinks for men and women. 3.28 do you think would have a larger standard h, Compare the standard deviation of the number of drinks of men and of prime Explain 3.23 Brain Size The brain size (in hundreds of thousands of Remove the outliers of 70 and 45 drinks for the men, and compare the pixels) is reported for some men and women in the table, (Source. violent meara again. What effect did removing the outliers have on the mean? Willerman, L. Schultz, R., Rutledge, J. N., and Bigler, E. (1991) "In Vivo Brain Sire and Intelligence," Intelligence, 15, 223-228.) J. What effect do you think rennes oudiers would have on the Make two separate wemplots for dotplots or histograms). Does standard devixion, and why? enher data set dow shong skew? If so, is the distribution 3.26 Smoking Mothers The birth weights (in grams) are given right sareed or left-skewed! for babies born to 22 mothers who smoked during their pregnancy to 35 mothers who did not smoke, Seven pounds is about Compare the u 1200 grams. (Source: Smoking Mothers, Holcomb 2006, accessed Compare the standard deviations via StatCrunch. Owner: kupresanin99)
