The following is the price (in dollars) of a stock checked by a trader several times on aparticular day.138142127137148130142133a)Compute the sample mean, standard deviation and median for the above data.b) Using the values obtained in (a), compute the coefficient which measures theskewness of the data. Interpret the result.c) Construct a 90 percent confidence interval for the mean price of stocks checked bythe trader.d)At the 5% significant level, can we infer that the average price of stock is less than$140?

For the given data Find all the required

Answered: The following is the price (in dollars)…

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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The following data shows the results for 20 students in one of the post graduate unit.42 66 67 71 78 62 61 76 71 6761 64 61 54 83 63 68 69 81 53Based on the information given you are required toi. Compute the mean, median and mode.ii. Compute the first and third quartiles. iii. Compute and interpret the 90th percentile.
Fifteen randomly selected college students were asked to state the number of hours they slept the night before. The resulting data are: 6 16 7 8 7 796 3 11 9 15 4 7 9 a) Find the mean. b) Find the median. c) Find the standard deviation. d) According to Chebysev's Theorem, at least 75% of the times will fall between what two amounts? Is the theorem accurate for this set of data? Why of Why not? e) Are any of the reported hours "unusually" high? Are any of the reported hours unusually low?
(b) Calculate the mean, median mode and standard deviation for the following data: 4600- 4800 75 4800- 5000 5000- 5200 5200- 5400 50 4000- 4400- Class size 4200 22 4200- 4400 38 4600 Freque 65 80 70
9. You are conducting an experiment on the effectiveness of a reading intervention with young children and want to report the descriptive results to your colleagues. Some of the children received the inter- vention, and some did not. What do the averages and standard deviations tell you about the results? For this exercise, use the data in Chapter 3 Data Set 2. No Intervention 18 16 17 15 16 14 22 21 7 24 23 19 12 20 23 Intervention 17 15 21 24 12 16 14 25 19 24 21 25 9 9 13
Calculate : (i) Quartile deviation (Q.D.), and (ii) Mean Deviation (M.D.) from mean, f the following data : Marks. : No. of Students : 3. 0-10 6 10-20 5 20-30 30-40 40-50 15 50-60 60-70 3
A researcher wants to know if there is a difference between the mean amount of sleep that people get for various types of employment status. The table below shows data that was collected from a survey. Full Time Worker Part Time Worker Unemployed 6 6 7 5 6 7 8 9 9 7 6 8 8 8 8 8 8 8 6 6 8 8 7 6 9 Assume that all distributions are normal, the three population standard deviations are all the same, and the data was collected independently and randomly. Use a level of significance of α=0.01α=0.01.H0: μ1=μ2=μ3H0: μ1=μ2=μ3H1:H1: At least two of the means differ from each other. For this study, we should use Select an answer 2-PropZTest 2-PropZInt 1-PropZInt 2-SampTInt 1-PropZTest T-Test χ²-Test ANOVA χ²GOF-Test TInterval 2-SampTTest The test-statistic for this data = (Please show your answer to 3 decimal places.) The p-value for this sample = (Please show your answer to 4 decimal places.) The p-value is Select an answer less than (or equal to) alpha greater…
D3 Time (Mins) 221 180 200 126 154 343 186 275 336 200 301 248 200 346 226 233 243 304 187 313 1.) A survey was taken among college students as to how many minutes they play a newly released online game Genshin Impact per day. Using UNGROUPED statistical analysis, calculate the followig: a.) Mean, Median and Mode, b.) Varriance and Standard Deviation. (Attach the photograph of your MANUALLY WRITTEN solution in the space provided)
MY DATA 2.54 Raisins The number of raisins in each EX0254 of 14 miniboxes (1/2-ounce size) was counted for a generic brand and for Sunmaid brand raisins. The two data sets are shown here: Generic Brand Sunmaid 25 26 25 28 25 29 24 24 26 28 28 27 28 24 28 22 26 27 24 25 25 28 30 27 26 26 28 24 a. What are the mean and standard deviation for the generic brand? b. What are the mean and standard deviation for the Sunmaid brand? c. Compare the centers and variabilities of the two brands using the results of parts a and b. 2.55 Raisins, continued Refer to Exercise 2.54. a. Find the median, the upper and lower quartiles, and the IQR for each of the two data sets. b. Construct two box plots on the same horizontal scale to compare the two sets of data. c. Draw two stem and leaf plots to depict the shapes of the two data sets. Do the box plots in part b verify these results? d. If we can assume that none of the boxes of raisins are being underfilled (that is, they all weigh approximately 1/2…

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