Based on the values of 399.04, 559.90, 690.99, 480.95, 732.50, 625.79. Calculate the variance and Standard...
Based on the values of 399.04, 559.90, 690.99, 480.95, 732.50, 625.79. Calculate the variance and Standard Deviation.
I am using the formula of s^=(Σx^2- (Σx)^2/n)/(n-1) and the variance is coming out in the millions. Not sure what I am doing wrong.
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TOPIC: Calculation of sample variance and sample standard deviation.
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Based on the values of 399.04, 559.90, 690.99, 480.95, 732.50,
625.79. Calculate the variance and Standard...
Reagent Calculation Before coming to class, you will need to calculate how much of the phenylmagnesium...
Reagent Calculation Before coming to class, you will need to calculate how much of the phenylmagnesium chloride solution will be needed for your reaction. You should calculate for 2.0 equivalents of Grignard reagent based on how much benzophenone you are to use in the reaction. 2.0 M in THF of phenylmagnesium (2 eq) benzophenone = 0.120 g Please help me figure this out! I keep getting the wrong answer. Professor said it should be 0.658 mL but I'm getting 0.3197 and...
Find the mean and standard deviation for each binomial random variable: a. n = 52, π...
Find the mean and standard deviation for each binomial random variable: a. n = 52, π = .80 (Round your mean value to 2 decimal places and standard deviation to 4 decimal places.) Mean 41.6 Standard deviation b. n = 90, π = .60 (Round your mean value to 2 decimal places and standard deviation to 4 decimal places.) Mean 54 Standard deviation c. n = 42, π = .75 (Round your mean value to 2 decimal places and standard...
Consider a family of four people, aged 8, 10, 33, and 37 as a population a) Calculate the population variance and standard deviation for the ages. Show your work step by step b) Random samples of siz...
Consider a family of four people, aged 8, 10, 33, and 37 as a population a) Calculate the population variance and standard deviation for the ages. Show your work step by step b) Random samples of size two are drawn with replacement from this population and their ages are recorded Find the variance and standard deviation for each sample (using the formula that involves divisions by n-1) and fill in the 3rd and 4th columns of the table Find the...
Find the sample variance and standard deviation : 7 11 23 28 29 30 31 38...
Find the sample variance and standard deviation : 7 11 23 28 29
30 31 38 51 55
Here is what I keep getting:
What am I doing wrong?
Homework: Section 3.2 Save Score: 0.5 of 1 pt 2 of 9 (2 complete) HW Score: 16.67%, 1.5 of 9 pts 3.2.9 Question Help Find the sample variance and standard deviation 7, 55, 11, 51,38, 23,29, 31, 30, 28 Choose the correct answer below. Fill in the answer box to complete...
1) Calculate the variance and standard deviation for each sample. (4 points) Note: you can use...
1) Calculate the variance and standard deviation for each sample. (4 points) Note: you can use the Definitional Formulas (Slides #10 and 12) to compute sa and s, or you can choose the Computational Formulas (Slide #13). Either way is fine because the computational formula is just another form of the definitional formula, as discussed in the video. 2) In relation to the size of the mean values from two samples, what do the different standard deviations between the two...
Calculate the magnitude of Q2 in units of nanocoulombs.
I'm pretty sure the formula for this conversion is Q2| = ( m g d2 )/( k Q1 ), but I keep getting the wrong answer and I'm not sure what I am doing wrong.
Calculate SS, variance, and standard deviation for the following population of N = 8 scores: 1,...
Calculate SS, variance, and standard deviation for the following population of N = 8 scores: 1, 3, 1, 10, 1, 0, 1, 3 (Note: The computational formula works well with these scores.)
3. Consider the following. n = 5 measurements: 3, 3, 1, 2, 5 Calculate the sample variance, s2, using the definition formula.
3. Consider the following. n = 5 measurements: 3, 3, 1, 2, 5 Calculate the sample variance, s2, using the definition formula. Calculate the sample variance, s2 using the computing formula. Calculate the sample standard deviation, s. (Round your answer to three decimal places.)4. A distribution of measurements is relatively mound-shaped with a mean of 60 and a standard deviation of 13. Use this information to find the proportion of measurements in the given interval. between 47 and 73 5. A distribution of...
4- Variance and Standard deviation (how far the data values lie from the mean) The mean,...
4- Variance and Standard deviation (how far the data values lie from the mean) The mean, mode, and median do a nice job in telling where the center of the data set is, but often we are interested in more. For example, a pharmaceutical engineer develops a new drug that regulates iron in the blood. Suppose she finds out that the average sugar content after taking the medication is the optimal level. This does not mean that the drug is...
Pharoah Co. has a capital structure, based on current market values, that consists of 30 percent...
Pharoah Co. has a capital structure, based on current market
values, that consists of 30 percent debt, 5 percent preferred
stock, and 65 percent common stock. If the returns required by
investors are 12 percent, 13 percent, and 15 percent for the debt,
preferred stock, and common stock, respectively, what is Pharoah’s
after-tax WACC? Assume that the firm’s marginal tax rate is 40
percent.
I solved it wrong by doing 30%*12*(1-40%)+13%*12%*+65%*15%=
0.021600 + 0.015600 + 0.097500=
0.1347=13.47%
I am not...
Consider a family of four people, aged 8, 10, 33, and 37 as a population a) Calculate the population variance and standard deviation for the ages. Show your work step by step b) Random samples of size two are drawn with replacement from this population and their ages are recorded Find the variance and standard deviation for each sample (using the formula that involves divisions by n-1) and fill in the 3rd and 4th columns of the table Find the...
Find the sample variance and standard deviation : 7 11 23 28 29
30 31 38 51 55
Here is what I keep getting:
What am I doing wrong?
Homework: Section 3.2 Save Score: 0.5 of 1 pt 2 of 9 (2 complete) HW Score: 16.67%, 1.5 of 9 pts 3.2.9 Question Help Find the sample variance and standard deviation 7, 55, 11, 51,38, 23,29, 31, 30, 28 Choose the correct answer below. Fill in the answer box to complete...
1) Calculate the variance and standard deviation for each sample. (4 points) Note: you can use the Definitional Formulas (Slides #10 and 12) to compute sa and s, or you can choose the Computational Formulas (Slide #13). Either way is fine because the computational formula is just another form of the definitional formula, as discussed in the video. 2) In relation to the size of the mean values from two samples, what do the different standard deviations between the two...
3. Consider the following. n = 5 measurements: 3, 3, 1, 2, 5 Calculate the sample variance, s2, using the definition formula. Calculate the sample variance, s2 using the computing formula. Calculate the sample standard deviation, s. (Round your answer to three decimal places.)4. A distribution of measurements is relatively mound-shaped with a mean of 60 and a standard deviation of 13. Use this information to find the proportion of measurements in the given interval. between 47 and 73 5. A distribution of...
4- Variance and Standard deviation (how far the data values lie from the mean) The mean, mode, and median do a nice job in telling where the center of the data set is, but often we are interested in more. For example, a pharmaceutical engineer develops a new drug that regulates iron in the blood. Suppose she finds out that the average sugar content after taking the medication is the optimal level. This does not mean that the drug is...
Pharoah Co. has a capital structure, based on current market
values, that consists of 30 percent debt, 5 percent preferred
stock, and 65 percent common stock. If the returns required by
investors are 12 percent, 13 percent, and 15 percent for the debt,
preferred stock, and common stock, respectively, what is Pharoah’s
after-tax WACC? Assume that the firm’s marginal tax rate is 40
percent.
I solved it wrong by doing 30%*12*(1-40%)+13%*12%*+65%*15%=
0.021600 + 0.015600 + 0.097500=
0.1347=13.47%
I am not...
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