What was the age distribution of nurses in Great Britain at the time of Florence Nightingale? Suppose we have the following information. Note: In 1851 there were 25,466 nurses in Great Britain. 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 74.5 84.5 Percent of nurses 5.4% 9.7% 19.5% 29.6% 25.0% 9.1% 1.7% (d) Compute the expected age ? of a British nurse contemporary to Florence Nightingale. (Round your answer to two decimal places.)   =_ yr (e) Compute the standard deviation ? for ages of nurses shown in the distribution. (Round your answer to two decimal places.)  =_ yr

Here are some ratings of the K-12 education system, on a scale from 1 to 10. 8. 5 8 7 7 4 8. 7 1 10 4 7 7 7 4 6 8 7 10 5 8. 7 10 10 7 7 0. Find the minimum and maximum of the data. 1. Make a frequency table of the data, with single digit intervals. 2. Create a histogram of the data from the frequency table.

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QUESTION 4 Find the median class from the frequency distribution table below Class (x) Frequency (f) 0-10 20 11-21 30 22-31 63 32-41 93 42-51 20 52-61 118 O A. 11-21 O B. 42-51 O C. 22-31 O D. 32-41 QUESTION 5 Finding Mean from the Frequency Distribution Table below; Please leave your answer to the nearest hundredths. X ---------- 0--------20 1-------30 2- 2,419 3-------- 64 4------- 50 5------- 15 it Cliok Saue All Answers to save all answers.

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Student # 2 13 14 5 6 Study Hours 2 42 22 24 19 18 19 98 78 70 59 10 88 Given the above data set, what is the range for Exam grade? Note this data set is the same as in the prior question. 51 11 22 19 Exam Grade 55 91 88 88 33 39

The table below shows the frequency distribution for the ages of women who became mothers during one year. a. Obtain a relative-frequency histogram of these age data. Choose the correct graph below. O A. Age (yrs) 10-under 15 Frequency 50,503 1,000,037 1,020,076 800,015 751,352 453,944 95,620 54,864 0.3- 15-under 20 20-under 25 12.5 22.5 32.5 42.5 25-under30 30-under 35 В. 35-under 40 0.37 40-under 45 45-under 50 12.5 22.5 32.5 42.5 Oc. 12.5 22.5 32.5 42.5 b. Based on your histogram, do you think that the ages of women who became mothers that year are approximately normally distributed? Yes No Rel. Freq. Rel. Freq. Rel. Freq.

What was the age distribution of nurses in Great Britain at the time of Florence Nightingale? Suppose we have the following information. Note: In 1851 there were 25,466 nurses in Great Britain. 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 74.5 84.5 Percent of nurses 5.2% 9.5% 19.8% 29.1% 25.1% 9.4% 1.9% (a) Find the probability that a British nurse selected at random in 1851 would be 60 years of age or older. (Round your answer to three decimal places.)(b) Compute the expected age ? of a British nurse contemporary to Florence Nightingale. (Round your answer to two decimal places.) yr(c) Compute the standard deviation ? for ages of nurses shown in the distribution. (Round your answer to two decimal places.) yr

6. For the data set with u = 50 and o = 5 What percent of the data is between... 45 and 50 45 and 55 40 and 50 60 and 65 50 and 65 above 50