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how do i do this ? 4. Find the mean and the standard deviation of the...
Compute the standard deviation σ for ages of British nurses in 1851. Assume that the table below shows the age distribution of nurses in Great Britain in 1851. Round your answer to nearest hundredth. Age range (yr) 20–29 30–39 40–49 50–59 60–69 70–79 80+ Midpoint (x) 24.5 34.5 44.5 54.5 64.5 75.5 84.5 Percent of nurses 5.8% 9.7% 19.4% 29.1% 24.9% 9.0% 2.1%
Consider a bell-shaped symmetric distribution with mean of 128 and standard deviation of 3. Approximately what percentage of data lie between 119 and 128? A)68% B)99.7% C)49.85% D)47.5% E)95%
b) The given frequency distribution describes the speeds of drivers ticketed by the Townof Poughkeepsie police. These drivers were traveling through a \(30 \mathrm{mi} / \mathrm{h}\) speed zone on Creek Road. Find the mean, and standard deviation of the sample.
Find the standard deviation, s, of sample data summarized in the frequency distribution table given below by using the formula below, where x represents the class midpoint, f represents the class frequency, and n represents the lotal number of sample values. Aiso, compare the computed standard deviation to the standard deviation obtained from the original list of data values, 9.0. [Σ.)-Συ.) nin-1) 60-59 25 60 49 70-79 Interval 20-29 30-30 4040 10 Frequency 20 36 (Round to one decimal place...
please find mean and standard deviation
Nutrition: animals. The mouse weights (in grams) of a random sample of 100 mice involved in a nutrition experiment are: Interval 141.5 - 43.5 43.5 - 45.5 45.5 - 47.5 47.5-49.5 49.5-51.5 Frequency 3 7 11 23 16 Interval 51.5 - 53.553.5-55.5 55.5 -57.5 57.5-59.5 Frequency 17 15 a. Find the mean of the weight of the mice.gms (Type an integer or a decimal. Round to two decimal places.) 12
The mean score of a competency test is 77, with a standard deviation of 4. Use the Empirical Rule to find the percentage of scores between 69 and 85. (Assume the data set has a bell-shaped distribution.
Find the standard deviation, s, of sample data summarized in the frequency distribution table below by using the formula below, where x represents the class midpoint, f represents the class frequency, and n represents the total number of sample values. Also, compare the computed standard deviation to the standard deviation obtained from the original list of data values, 11.1. SE [E (-x2)]- [68 - x))? n(n-1) Interval 30-36 44-50 Frequency 2 3 Standard deviation - (Round to one decimal place...
Find the standard deviation, s, of sample data summarized in the frequency distribution table below by using the formula below, where x represents the class midpoint, represents the class frequency, and n represents the total number of sample values. Also, compare the computed standard deviation to the standard deviation obtained from the original list of data values, 111 [(+•x?)]-[• x)] n(n-1) Interval 30-36 37-43 Frequency Standard deviation (Round to one decimal place as needed) 44-50 6 51-57 -3 0 58-64...
I already did the first worksheet, i need the second worksheet
that depends on the first page i did
Statisties Worksheet 1 Due at the beginning of class on Tuesday, January 29°. This worksheet will count as two online homework grades 1.) Here are the winning margins for the first 42 Super Bowl games (for example the 25 means that the winning team scored 25 more points than the losing team in that Super Bowl): (Already entered in In Class...
Find the standard deviation, s, of sample data summarized in the frequency distribution table below by using the formula below, where x represents the class midpoint, f represents the class frequency, and n represents the total number of sample values. Also, compare the computed standard deviation to the standard deviation obtained from the original list of data values, 11.1 .