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answer these two questions please
Consider these sample data: x1 = 16, x2 = 3, x3...
3.3.128 Question Help The quantitative data set under consideration has roughly a bell-shaped distribution. Apply the...
3.3.128 Question Help The quantitative data set under consideration has roughly a bell-shaped distribution. Apply the empirical rule to answer the following question A quantitative data set of size 60 has mean 30 and standard deviation 3. Approximately how many observations lie between 21 and 397 Approximately observations lle between 21 and 39 (Round to the nearest whole number as needed.)
16) The weights, in kilograms, of 60 randomly selected female school children from Country A, ages...
16) The weights, in kilograms, of 60 randomly selected female school children from Country A, ages 12-15 years old, are presented in increasing order in the following table: 16) 35.3 37.6 38.1 38.8 38.9 39.0 39.1 40.2 41.2 41.2 41.3 41.7 42.1 42.1 42.1 42.3 42.6 42.7 42.8 43.2 43.3 43.3 44.1 44.3 44.5 44.8 45.1 45.1 45.2 45.4 45.4 45.6 45.8 45.8 46.0 46.2 46.3 46.6 46.6 47.1 47.3 47.5 47.6 47.7 48.1 48.1 48.3 48.3 48.4 48.6 48.6...
Question 3 2/3 pts A sample data set with a bell-shaped distribution and size n -...
Question 3 2/3 pts A sample data set with a bell-shaped distribution and size n - 128 has mean -2 and standard deviation s- 1.1. Find the approximate number of observations in the data set that lie: 1. below -0.2; 3 2. below 3.1: 108 3. between -1.3 and 0.9. 19 (Round to the closest integer) Answer 1:
Additional Problem A researcher collected data on Y and four X-variables: X1, X2, X3, X4, and he ...
Additional Problem A researcher collected data on Y and four X-variables: X1, X2, X3, X4, and he wants to obtain a regression model. However, he is not sure if all the four X-variables should be included in the model. He provides you with the information shown below, namely, the SSR obtained when Y was regressed on each subset of X-variables. Also given: SST-100, and that the sample size is n 12. Your task Apply the Forward-Stepwise selection method, with a-to-enter-...
MATH-1308-501-ELEM SIATISTICAL ANALYSIS mework: 3.2 Measures of Dispersion Save 4 of 16 (3 complete) re: 0...
MATH-1308-501-ELEM SIATISTICAL ANALYSIS mework: 3.2 Measures of Dispersion Save 4 of 16 (3 complete) re: 0 of 1 pt 4.7 HW Score: 18.75%, 3 of 16 pt Question Help iscuss the similarities and the differences between the Empirical Rule and Chebycher's Theorem What is a similarity between the Empirical Rule and Chebycher's Theorem? MA Both estimate proportions of the data contained within standard deviations of the mean 3. Both do not require the data to have a sample standard deviation...
please answer the questions easily Suppose X1, X2, X3 is a random sample from a normal...
please answer the questions easily
Suppose X1, X2, X3 is a random sample from a normal population with mean μ and variance (a) I,'ind i.he variallex, of Y , x..:.: Xy/X.t as an ( tinai." r of μ (b) Find the variance of Z-A+x2+x3 as an estimator of μ. (c) Which estimator is more efficient (i.e. has the smallest variance)? Consider a random sample of size n from a normal population with known mean μ and unknown variance σ2. Let...
Consider two independent random samples, X1, X2, X3, X1 and Y1, Y , Y3, 74, Y5,...
Consider two independent random samples, X1, X2, X3, X1 and Y1, Y , Y3, 74, Y5, Y, each from the same population having unknown mean and unknown variance ,2. Consider the set of estimators for p given by S{A} = {ña :fla = (1 - a) X+ay, for 0 <a<1}. What is the value of a, denoted by a*, such that file has the lowest mean square error of all available estimators in S{n} ? Answer:
rk (Copy) Score: 0.5 of 1 pt 23 of 35 (21 complete) 2.4.7 Discuss the similarities...
rk (Copy) Score: 0.5 of 1 pt 23 of 35 (21 complete) 2.4.7 Discuss the similarities and the differences between the Empirical Rule and Chebychev's Theorem What is a similarity between the Empirical Rule and Chebychev's Theorem? A. Both do not require the data to have a sample standard deviation. B. Both estimate proportions of the data contained within k standard deviations of the mean. C. Both calculate the variance and standard deviation of a sample. O D. Both apply...
Please help answer questions (a)-(c). Objective 4: Use the Empirical Rule to Describe Data That Are...
Please help answer questions (a)-(c).
Objective 4: Use the Empirical Rule to Describe Data That Are Bell-Shaped 3.2 Measures of Dispersion 3.2.29 0 of 1 Point Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 11. Use the empirical rule to determine thefollowing (a) What percentage of people has an IQ score between 67 and 133? (b) What percentage of people has an IQ score less than 67 or greater...
The class levels of thets rcs are sown the right, where Ft, So, and r doeman,...
The class levels of thets rcs are sown the right, where Ft, So, and r doeman, sophomore to cope parts( union, and senic respecively Use th through (d Determine a frequenay disirbution Class Level FrequencY So Sr b. Obtain a relative-frequengy Class Level ↓ RelativeFrequenc. Fr So Sr Type integers or decimals) c. Draw a ple chart. Choose the correct chart below OB. O c. So 27 Jr 22.5% so 37 so 30% -22.5% So 32 Jr25% 20% d. Construct...
3.3.128 Question Help The quantitative data set under consideration has roughly a bell-shaped distribution. Apply the empirical rule to answer the following question A quantitative data set of size 60 has mean 30 and standard deviation 3. Approximately how many observations lie between 21 and 397 Approximately observations lle between 21 and 39 (Round to the nearest whole number as needed.)
16) The weights, in kilograms, of 60 randomly selected female school children from Country A, ages 12-15 years old, are presented in increasing order in the following table: 16) 35.3 37.6 38.1 38.8 38.9 39.0 39.1 40.2 41.2 41.2 41.3 41.7 42.1 42.1 42.1 42.3 42.6 42.7 42.8 43.2 43.3 43.3 44.1 44.3 44.5 44.8 45.1 45.1 45.2 45.4 45.4 45.6 45.8 45.8 46.0 46.2 46.3 46.6 46.6 47.1 47.3 47.5 47.6 47.7 48.1 48.1 48.3 48.3 48.4 48.6 48.6...
Question 3 2/3 pts A sample data set with a bell-shaped distribution and size n - 128 has mean -2 and standard deviation s- 1.1. Find the approximate number of observations in the data set that lie: 1. below -0.2; 3 2. below 3.1: 108 3. between -1.3 and 0.9. 19 (Round to the closest integer) Answer 1:
Additional Problem A researcher collected data on Y and four X-variables: X1, X2, X3, X4, and he wants to obtain a regression model. However, he is not sure if all the four X-variables should be included in the model. He provides you with the information shown below, namely, the SSR obtained when Y was regressed on each subset of X-variables. Also given: SST-100, and that the sample size is n 12. Your task Apply the Forward-Stepwise selection method, with a-to-enter-...
MATH-1308-501-ELEM SIATISTICAL ANALYSIS mework: 3.2 Measures of Dispersion Save 4 of 16 (3 complete) re: 0 of 1 pt 4.7 HW Score: 18.75%, 3 of 16 pt Question Help iscuss the similarities and the differences between the Empirical Rule and Chebycher's Theorem What is a similarity between the Empirical Rule and Chebycher's Theorem? MA Both estimate proportions of the data contained within standard deviations of the mean 3. Both do not require the data to have a sample standard deviation...
please answer the questions easily
Suppose X1, X2, X3 is a random sample from a normal population with mean μ and variance (a) I,'ind i.he variallex, of Y , x..:.: Xy/X.t as an ( tinai." r of μ (b) Find the variance of Z-A+x2+x3 as an estimator of μ. (c) Which estimator is more efficient (i.e. has the smallest variance)? Consider a random sample of size n from a normal population with known mean μ and unknown variance σ2. Let...
Consider two independent random samples, X1, X2, X3, X1 and Y1, Y , Y3, 74, Y5, Y, each from the same population having unknown mean and unknown variance ,2. Consider the set of estimators for p given by S{A} = {ña :fla = (1 - a) X+ay, for 0 <a<1}. What is the value of a, denoted by a*, such that file has the lowest mean square error of all available estimators in S{n} ? Answer:
rk (Copy) Score: 0.5 of 1 pt 23 of 35 (21 complete) 2.4.7 Discuss the similarities and the differences between the Empirical Rule and Chebychev's Theorem What is a similarity between the Empirical Rule and Chebychev's Theorem? A. Both do not require the data to have a sample standard deviation. B. Both estimate proportions of the data contained within k standard deviations of the mean. C. Both calculate the variance and standard deviation of a sample. O D. Both apply...
Please help answer questions (a)-(c).
Objective 4: Use the Empirical Rule to Describe Data That Are Bell-Shaped 3.2 Measures of Dispersion 3.2.29 0 of 1 Point Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 11. Use the empirical rule to determine thefollowing (a) What percentage of people has an IQ score between 67 and 133? (b) What percentage of people has an IQ score less than 67 or greater...
The class levels of thets rcs are sown the right, where Ft, So, and r doeman, sophomore to cope parts( union, and senic respecively Use th through (d Determine a frequenay disirbution Class Level FrequencY So Sr b. Obtain a relative-frequengy Class Level ↓ RelativeFrequenc. Fr So Sr Type integers or decimals) c. Draw a ple chart. Choose the correct chart below OB. O c. So 27 Jr 22.5% so 37 so 30% -22.5% So 32 Jr25% 20% d. Construct...
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