Dawson Products had 20 losses in 1999, 21 in 2000, 43 in 2001, 38 in 2002, and 29 in 2003. What is the standard deviation of losses? O 333.56 O 414.8 O 9.11 O 151

The estimated distribution (in millions) of the population by age in a certain country for the year 2015 is shown in the pie chart. Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. Use 70 as the midpoint for "65 years and over." ... The sample standard deviation is s = as needed.) Under 4 years: 23.3 5-14 years: 42.4 15-19 years: 19.2 20-24 years: 23.5 25-34 years: 43.5 35-44 years: 40.3 45-64 years: 81.8 65 years and over: 52.9 (Round to two decimal places

Suppose that replacement times for washing machines are normally distributed with a mean of 8.3 years and a standard deviation of 1.3 years. Find the replacement time that separates the top 18% from the bottom 82%. Round to the nearest tenth. Click to view page 1 of the table. Click to view page 2 of the table, O A. 8.5 years O B. 9.5 years OC. 8.9 years O D. 7.1 years Click to select your answer. tv MacBook Air 4) F7 80 D00 F4 ES esc FI * & # $ % 9 @ 6 7 8 2 3 4 P W E R

1)Find the standard deviation and construct a histogram to show (round one decimal place).2) What is the probability that Tia will issue at least 2 speeding tickets per day?3) What is the probability that Tia will issue no more than 2 speeding ticket per day?

In one of the Stat 2 sections, the students in the section have an average height of 64 inches, with a standard deviation of 3 inches. The GSI happens to be 68 inches. Express the height of the GSI in standard units, relative to the students in the section. Choose the answer below that is closest. Group of answer choices 1.67 3.0 1.5 1.33 4.0      PreviousNext

What is the population standard deviation using the following formula

70 74 79 82 77 80 84 For this sample of golf scores give: 1. Σε. 2. Σ 3. x 4. s= 5. The sample standard deviation =

Suppose that the number of Facebook friends users have is normally distributed with a mean of 149 and a standard deviation of about 41. Assume fifteen individuals are randomly chosen. Answer the following questions. Round all answers to 4 decimal places where possible. a.  What is the distribution of x̄? x̄ - N  -----------, ---------- b.  For the group of 15, find the probability that the average number of friends is less than 156. ------------- c.  Find the first quartile for the average number of Facebook friends. Round to 2 decimals places. --------------- d.  For part b), is the assumption that the distribution is normal necessary?  ------------No, --------- yes

Find the standard deviation of workers with no drug problem from the sample. (Round your answer to the nearest hundredth)

John's answering machine receives about 6 telephone calls between 8:00 am and 8:00 pm. Let X = the number of phone calls received between 1:00 pm to 5:00 pm. What is the standard deviation of X?