what is the z-score formula?(value - standard deviation) divide by mean(value - mean) divide by standard deviation(mean - value) divide by standard deviation(mean - standard deviation) divide by value

Simply explained, a z-score indicates how distant a data point is from the mean. But, in more…

Answered: what is the z-score formula? (value -…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Please Show All Workings Very Clearly! Number of customers who visited a business organization during the last 50 days is provided by the below frequency distribution in the table. Number of Number of days customers 30 - 39 08 40 - 49 10 50 - 59 15 60 - 69 07 70 - 79 06 80 - 89 04 Total 50 Using that information calculate the, mean and mode of the number of customers, along with the variance and standard deviation of the number of customers.
Use the range rule of thumb to identify the values that are significantly low, the values that are signficantly high, and the values that are neither significantly low nor significantly high. A test is used to assess readiness for college. In a recent year, the mean test score was 22.5 and the standard deviation was 5.3. Identify the test scores that are significantly low or significantly high. Question content area bottom Part 1 What test scores are significantly low? Select the correct answer below and fill in the answer box(es) to complete your choice. A. Test scores that are between enter your response here and enter your response here. (Round to one decimal place as needed. Use ascending order.) B. Test scores that are greater than enter your response here. (Round to one decimal place as needed.) C. Test scores that are less than enter your response here. (Round to one decimal place as needed.)
ASAP please
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estion Help In a psychology journal, researchers reported that a chief executive officer's facial structure can be used to predict a firm's financial performance. The study involved measuring the facial width-to-height ratio (WHR) for each in a sample of 51 CEOS at publicly traded Fortune 500 firms. These WHR values (determined by computer analyzing a photo of the CEO's face) had a mean of x = 1.81 and a standard deviation of s = 0.12. Use this information to complete parts a and b below. a. Find and interpret a 90% confidence interval for u, the mean facial WHR for all CEOS at publicly traded Fortune 500 firms. (Round to three decimal places as needed.) O A. The 90% confidence interval for mean facial WHR indicates that the true mean facial WHR for the CEOS in the sample is between and with 90% confidence. O B. The 90% confidence interval for mean facial WHR indicates that 90% of all CEOS at publicly traded Fortune 500 firms have a WHR between and O C. The 90% confidence interval for…
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The coefficient of variation CV describes the standard deviation as a percent of the mean. Because it has no units, you can use the coefficient of variation to compare data with different units. Find the coefficient of variation for each sample data set. What can you conclude? Heights Weights77 19379 20569 22379 22077 22572 17965 20173 21071 19670 20475 21379 209 CV heights= % CV weights = % what can you conclude?

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what is the z-score formula? (value - standard deviation) divide by mean (value - mean) divide by standard deviation (mean - value) divide by standard deviation O (mean - standard deviation) divide by value