Assignment III 1) Use the non-machine formula to calculate the variance and standard deviation from the...

Assignment III 1) Use the non-machine formula to calculate the variance and standard deviation from the following data Herd 1 67 62 69 72 68 68 71 69 65 71 70 64 64 66 71 67 75 2) What is the probability that one card selected from a deck of 52 is a club or a number card or both? 3) A container contains 10 green tennis balls and 7 orange tennis balls. What is the probability of drawing 2 green tennis balls in a row? Draw without replacement. 4) A die is rolled four times what is the probability of rolling 3 twos? 5) A pair of dice is rolled 5 times, what is the probability of 3 sixes? 6) An internal study by the Technology Services department at Lahey Electronics revealed company employees receive an average of two emails per hour. Assume the arrival of these emails is approximated by the Poisson distribution. a) What is the probability Linda Lahey, company president, received exactly 1 email between 4pm and 5 pm yesterday? b) What is the probability she received 5 or more email during the period? c) What is the probability she did not receive any email during the period? 7) The personnel manager of Cumberland Pig Iron Company is studying the number of onthe-job accidents over a period of one month. He developed the following probability distribution in the following table. Compute the mean, variance, and standard deviation of the number of accidents in a month. Number of Accidents Probability 0 .40 1 .20 2 .20 3 .10 4 .10

Expert Solution

orchestra answered 2 years ago

The formula for a sample Standard Deviation is Say we want to use standard deviation as...

The formula for a sample Standard Deviation is Say we want to use standard deviation as a way of comparing the amount of spread present in each of two different distributions. What is the effect of squaring the deviations? (1 mark) How does this help us when we compare the spreads of two distributions? (1 mark) With reference to the formula and the magnitude of data values, explain why introducing an outlier to a dataset affects the Standard Deviations more...

Given the data set below, calculate the standard deviation standard deviation using the defining formula standard...

Given the data set below, calculate the standard deviation standard deviation using the defining formula standard deviation using the computing formula 8,41,24,19,15,12,47,12,33

1. Calculate the mean, the variance, and the standard deviation of the following discrete probability distribution....

1. Calculate the mean, the variance, and the standard deviation of the following discrete probability distribution. X -23 17 -9 -3 P(X=x) 0.5 0.25 0.15 0.19 2. A marketing firm is considering making up to three new hires. Given its specific needs, the form feels that there is a 60% chance of hiring at least two candidates. There is only a 5% chance that it will not make any hires and a 10% chance that it will make all three...

This data is from a sample. Calculate the mean, standard deviation, and variance. x 38.3 35.2...

This data is from a sample. Calculate the mean, standard deviation, and variance. x 38.3 35.2 26.7 49.9 44.6 14.2 16.4 34 14.4 Please show the following answers to 2 decimal places. Sample Mean = Sample Standard Deviation = Sample Variance = Ooops - now you discover that the data was actually from a population! So now you must give the population standard deviation. Population Standard Deviation =

(a) Use the Sample Variance Definition to find the variance and standard deviation of the data.

Perform each task, given the following sample data. (Round your answers to one decimal place.) 4 8 7 4 10 9 (a) Use the Sample Variance Definition to find the variance and standard deviation of the data. variance standard deviation (b) Use the Alternative Formula for Sample Variance to find the variance and standard deviation of the data. variance standard deviation

Using the table below, calculate the variance of X, variance of Y, standard deviation of X,...

Using the table below, calculate the variance of X, variance of Y, standard deviation of X, standard deviation of Y, the covariance between X and Y, the correlation coefficient between X and Y, and find the regression line assuming X is the independent variable (find the slope and the intercept). Show your work Fill in the Blanks: X Y X-Xbar Y-Ybar (X-Xbar)^2 (Y-Ybar)^2 (X-Xbar)*(Y-Ybar) 5 3 9 6 12 15 17 20 21 23 Sum Calculate the following and show...

1) Calculate the standard deviation and variance of the sample quantitative data shown, to two decimal...

1) Calculate the standard deviation and variance of the sample quantitative data shown, to two decimal places. x 1.6 7.9 25.1 25.7 14.3 A) Standard deviation: B) Variance: 2) In a neighborhood donut shop, one type of donut has 570 calories, seven types of donuts have 410 calories, four types of donuts have 360 calories, five types of donuts have 450 calories, and seven types of donuts have 600 calories. A) Find the range. B) Find the standard deviation. Round...

Directions from assignment: Calculate the standard deviation for your data. Describe the range of values that...

Directions from assignment: Calculate the standard deviation for your data. Describe the range of values that are within 3 sigma of the mean and the impact it has on the likelihood of a value being in that range in terms of the variable chosen. My data is : 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15. I calculated the standard deviation as 4.3 and by using the calculated mean of 7.5. I do not know how to describel the range of values or what they are within...

calculate the mean daily return, Variance and standard deviation for each stock?

BAFB-0.01209-0.009810.002052-0.00471-0.0050.0151010.0039630.0063530.0034920.0008790.003253-0.00160.005702-0.001440.0054430.000160.000752-0.000160.01172-0.007850.002525-0.00484-0.002070.0086780.002078-0.0037-0.00415-0.002820.0040910.004775-0.00630.001772-0.00634-0.00716-0.002330.00332-0.005640.0086370.0050670.012644-0.01573-0.00553-0.01040.0022250.0034760.0003960.00970.0026950.0139520.025452-0.002630.0101750.00196-0.00595-0.03288-0.024330.0123710.01251-0.01045-0.0115-0.008470.0044020.0007830.004539-0.008370.005610.006156-0.003250.002432-7.8E-050.0216760.0101060.0100340.001077-0.00068-0.0163-0.00918-0.005080.0057440.010840.006930.004196-0.00908-0.008820.0054190.0014050.0048580.003898-0.00098-0.00450.0182230.002184-0.001780.002102-0.004240.0019420.0148670.009691-0.01546-0.01044-0.004340.0013190.001652-0.009530.00090.0004690.003745-0.002660.0082090.0080760.0079940.011978-0.0025-0.00085-0.001550.0159230.0134190.0091620.011422-0.007430.0469-0.00945-0.01532-0.0103-0.002090.012337-0.00406-0.00228calculate the mean daily return, Variance and standard deviation for each stock?

Calculate the range, interquartile range, variance, standard deviation and coefficient of variation.

A sample has data values 27, 25, 20, 15, 30, 34, 28, 25. Calculate the range, interquartile range, variance, standard deviation and coefficient of variation.

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