A given distribution has a population mean, μ, of 138 and a population standard deviation, σ, of 9. What z-score would be associated with the value x = 128? Round to two decimal places, as needed.
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A given distribution has a population mean, μ, of 138 and a population standard deviation, σ, of 9. What z-score would be associated with the value x = 128?
Round to two decimal places, as needed.
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- For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 39 beats per minute, the mean of the listed pulse rates is x = 78.0 beats per minute, and their standard deviation is s = 13.1 beats per minute. %3D a. What is the difference between the pulse rate of 39 beats per minute and the mean pulse rate of the females? b. How many standard deviations is that [the difference found in part (a)]? c. Convert the pulse rate of 39 beats per minutes to a z score. d. If we consider pulse rates that convert to z scores between - 2 and 2 to be neither significantly low nor significantly high, is the pulse rate of 39 beats per minute significant? a. The difference is beats per minute. (Type an integer or a decimal. Do not round.)Find the margin of error for the given data values of c,s and n C = 0.95, s = 520 and n = 62 Round to two decimals11.53 The following data represent the chemistry grades for a random sample of 12 freshmen at a cer- tain college along with their scores on an intelligence test administered while they were still seniors in high school. Test Student Score, a 1 2 3 33563 4 7 8 9 10 11 12 65 50 55 65 55 70 65 70 55 70 50 55 Chemistry Grade, y 85 74 76 90 85 87 94 98 81 91 76 74 a. Compute the correlation coefficient. Is there a strong relationship between tests on a high school intelligence test and college chemistry grades? b. Does a linear relationship exist between the two variables? c. Plot the data with the correlation coefficient added to the graph space.
- Please answer within 30min thanks.Given the following mean and standard deviation, find the z-score for each individual score. Find the difference between the data value and the mean then divide by the standard deviation. X = 10 a. X= 8 s = 2 Z = %3D b. X= 38 X = 40 s = 5 Z = С. X%3D94 X = 100 s = 10 z = d. X= 65 X = 50 s = 10 Z = %3D e. X= 30 X = 25 s = 5 Z =The mean salary at a local industrial plant is $29,600 with a standard deviation of $5700. The median salary is $25.300 and the 59th percentile is $30,200. Step 5 of 5: If Tom's salary has a z-score of 0.6, how much does he earn (in dollars)?
- What is the population standard deviation using the following formulaUse the given data values (a sample of female arm circumferences in centimeters) to identify the corresponding z scores that are used for a normal quantile plot, then identify the coordinates of each point in the normal quantile plot. Construct the normal quantile plot, then determine whether the data appear to be from a population with a normal distribution. a. List the z scores for the normal quantile plot. (Round to two decimal places as needed. Use ascending order.) b. identify the coordinates of each point in the normal quantile plot. Use ordered pairs for the form (x,y), where x is the sorted arm circumferences in ascending order, and y is the corresponding z score. (Round to two decimal places as needed. Use ascending order.)The mean annual income for adult women in one city is $28,520 and the standard deviation of the incomes is $5,400. The distribution of incomes is skewed to the right. For samples of size 111 determine whether the distribution of x is normal or approximately normal and give its mean and standard deviation. O A. Normal, mean p; = $28,520, standard deviation o; = $5,400 O B. Approximately normal, mean p: = $28,520, standard deviation o: = $513 OC. Approximately normal, mean p- = $28,520, standard deviation o = $5,400 O D. Normal, mean p- = $28,520, standard deviation o- = 513
- Use the following set of values for #10 - 13. Round answers to nearest hundredth, if necessary. .3, .6, 9, 1.3, .4, .6, 1.2, 1.4, 1.1, .2, .2 10. Find the mean, median, and mode(s) 11. Find the range 12. Find the interquartile range 13. Find the standard deviationThe measure of dispersion that is influenced most by extreme values is Select one: a. the interquartile range b. the variance c. the standard deviation d. the rangeAssume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. A thermometer is randomly selected and tested. Draw a sketch and find the temperature reading corresponding to P34, the 84th percentile. This is the temperature reading separating the bottom 84% from the top 16%. Click to view page 1 of the table. Click to view page 2 of the table. Which graph represents P ? Choose the correct graph below. 84 A. В. OC. D. Ay X The temperature for P84 is approximately (Round to two decimal places as needed.)
