Calculate the standard deviation of the following four observations: 12,13,15,20

calculate the standard deviation of the following four observations: 13,14,16,18

Calculate the range, population variance, and population standard deviation for the following data set. If necessary round to one more decimal place than the largest number of decimal places given in data. 15,8,18,20,7,17,8,18,8,14

The results from a statistics class' first exam are as follows: The average grade obtained on the exam by its 45 students is an 85, with a standard deviation of 15 points. Answer the following based on this information: What z-score is required to be in the top 40%? QUESTION 45 The results from a statistics class' first exam are as follows: The average grade obtained on the exam by its 45 students is an 85, with a standard deviation of 15 points. Answer the following based on this information: What percentage of individuals have a z-score between -1 and 1.40? QUESTION 46 The results from a statistics class' first exam are as follows: The average grade obtained on the exam by its 45 students is an 85, with a standard deviation of 15 points. Answer the following based on this information: What percentage of individuals have a z-score between 1.05 and 1.40?

calculate the standard  deviation for the following data set   2  4   3    7    2   roundup to 2  deciamal digits

Use the following information to answer the next four questions. A manager of a fast-food chain wants to analyze the length of time a vehicle spends at the drive-through window waiting for an order. According to records obtained from the chain, the population mean time spent waiting at the window was 236.5 seconds with a population standard deviation of 34.8 seconds. It is known that the distribution of time waiting at the window is extremely right-skewed. The waiting time was recorded for a random sample of 21 vehicles. For the random sample obtained, the sample mean waiting time was found to be 254.6 seconds with a sample standard deviation of 23.1 seconds. In this example, for the numerical values 236.5 and 254.6 O a. 236.5 is a parameter, 254.6 is a statistic O b. Both are parameters O C. Both are statistics O d. 236.5 is a statistic, 254.6 is a parameter

Find the mean and standard deviation of the following list of weights(in pounds) of boston terriers at a per store: 9,18,13,14,18,7,6,12,17,20 CS Scanned with CamScanner

A sample of 10 networking sites for a specific month has a mean of 26.1 and a standard deviation of 4.2. Which of these is the point estimator? a. 4.2 b. 1.83 c. 3.25

22

What is the standart- deviation of Y in the following data? Select one: 34/6 34 none 34/6