Here are the shopping times in minutes) for a sample of 5 shoppers at a particular...
Here are the shopping times (in minutes) for a sample of 6 shoppers at a particular computer store: 35, 20, 22, 33, 38, 20 Find the standard deviation of this sample of shopping times. Round your answer to two decimal places.
Here are the shopping times in minutes) for a sample of 22 shoppers at a particular computer store: 26, 23, 44, 41, 38, 35, 31, 28, 25, 22, 43, 40, 21, 21, 43, 43, 43, 39, 39, 39, 36, 36 Draw the frequency polygon for these data using an initial class boundary of 20.5 and a class width of 5. Note that you can add or remove classes from the figure. Label each class with its midpoint. Frequency I:lolo:1 8...
P4xcvcZN2HQDRJQiWdax1PZm2.. O STATISTICS Histograms for grouped data Here are the shopping times in minutes) for a sample of 22 shoppers at a particular grocery store: 26, 23, 44, 41, 38, 35, 31, 28, 25, 22, 43, 40, 21, 21, 21, 43, 43, 43, 39, 39, 36, 36 Draw the histogram for these data using an initial class boundary of 20.5 and a class width of 5. Note that you can add or remove classes from the figure. Label each class...
The 6 participants in a 200-meter dash had the following finishing times in seconds). 26, 24, 24, 32, 32, 30 Assuming that these times constitute an entire population, find the standard deviation of the population. Round your answer to two decimal places. (If necessary, consult a list of formulas.) 0 X 5 ?
3 6 7 8 9 10 11 12 13 14 Here are the shopping times (in minutes) for a sample of 21 shoppers at a particular computer store: 26, 23, 44, 41, 38, 35, 31,28,25, 22, 43, 24, 24, 21, 21, 21, 43, 43, 39, 39, 39 Draw the histogram for these data using an initial class boundary of 20.5, an ending class boundary of 45.5, and 5 classes of įqual width. Note that you can add or remove classes...
Executives of a supermarket chain are interested in the amount of time that customers spend in the stores during shopping trips. The executives hire a statistical consultant and ask her to determine the mean shopping time, p, of customers at the supermarkets. The consultant will collect a random sample of shopping times at the supermarkets and use the mean of these shopping times to estimate p. Assuming that the standard deviation of the population of shopping times at the supermarkets...
The red blood cell counts (in 10^5 cells per microliter) of a healthy adult measured on 6 days are as follows: 55, 54, 49, 50, 48, 50 Find the standard deviation of this sample of counts. Round your answer to two decimal places. (If necessary, consult a list of formulas.)
The following data are the distances from the workplace in miles) for the 5 employees of a small business. 8.5.19.5.18 Assuming that these distances constitute an entire population, find the standard deviation of the population. Round your answer to two decimal places. (If necessary, consult a list of formulas.)
A random sample of 16 pharmacy customers showed the waiting times below (in minutes). 11 25 19 17 24 16 18 20 19 23 21 17 17 14 15 11 Click here for the Excel Data File Find a 90 percent confidence interval for μ, assuming that the sample is from a normal population. (Round your standard deviation answer to 4 decimal places and t-value to 3 decimal places. Round your answers to 3 decimal places.) The 90% confidence interval...
A fair die is rolled 5 times. What is the probability that a 2 is obtained on at least one of the rolls? Round your answer to three decimal places. (If necessary, consult a list of formulas.)