The following data were used in a regression study.

(a) Develop an estimated regression equation for these data. (Round your numerical values to two decimal places.)

ŷ =  

The estimated regression equation for these data is  ŷ = 1.50 + 2.10x.

(b) Compute SSE, SST, and SSR using equations SSE = Σ(y_i − ŷ_i)², SST = Σ(y_i − y)²,  and SSR = Σ(ŷ_i − y)².

SSE =  

SST =  

SSR =  

(c) Compute the coefficient of determination r².

r² =

180 students were asked to randomly pick one of the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. The number 7 was picked by 61 students.

a) For the sample, calculate the proportion of students who picked 7. (Round the answer to three decimal places.)

(b) Calculate the standard error for this sample proportion. (Round the answer to three decimal places.)

(c) Calculate a 90% confidence interval for the population proportion. (Round the answer to three decimal places.) to

(d) Calculate a 95% confidence interval for the population proportion. (Round the answer to three decimal places.) to

(e) Calculate a 98% confidence interval for the population proportion. (Round the answer to three decimal places.) to

(f) What do the results of parts (c)-(e) indicate about the effect of confidence level on the width of a confidence interval? (Select all that apply.)

As the confidence level is increased, the width of the interval decreases.

As the confidence level is decreased, the width of the interval decreases.

As the confidence level is decreased, the width of the interval increases.

As the confidence level is increased, the width of the interval increases.

(g) On the basis of these confidence intervals, do you think that students choose numbers "randomly"?

Yes

No

210 students were asked to randomly pick one of the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. The number 7 was picked by 61 students.

(c) Calculate a 90% confidence interval for the population proportion. (Round the answer to three decimal places.)

___________to ___________

(d) Calculate a 95% confidence interval for the population proportion. (Round the answer to three decimal places.)
to  

__________to____________

(e) Calculate a 98% confidence interval for the population proportion. (Round the answer to three decimal places.)

____________to_________

A box contains 5 chips marked 1, 2, 3, 4, and 5. One chip is drawn at random, the number on it is noted, and the chip is replaced. The process is repeated with another chip. Let X1, X2, X3 and X4 the outcomes of the three draws which can be viewed as a random sample of size 4 from a uniform distribution on integers.

a) Calculate the Skewness and Kurtosis for the sample mean (X bar ). Explain your results

Given are five observations for two variables, x and y. xi 1 2 3 4 5 yi 4 7 6 12 14 a. Using the following equation: 12.32a.jpg Estimate the standard deviation of ŷ* when x = 3. b. Using the following expression: 12.32b.jpg Develop a 95% confidence interval for the expected value of y when x = 3. c. Using the following equation: 12.32c.jpg Estimate the standard deviation of an individual value of y when x = 3. d. Using the following expression: 12.32d.jpg Develop a 95% prediction interval for y when x = 3.

Which is NOT a retrieving strategy?

Which is not a possible cause of mental retardation?

Suppose we keep rolling a tetrahedral die (with faces marked as 1, 2, 3, 4) till an even number appears for the first time.

(a) Give a precise description of the sample space.

(b) Give the probability of each elementary outcome (each element of the sample space).

(c) Find the probability of an even number appearing for the first time at the nth roll.

(d) Find the probability of an even number appearing for the first time no later than the nth roll.

What are the (1) hash algorithm identifier, (2) cost factor, (3) salt, and (4) hash value of the following given hashed password that is generated by bcrypt()?

$2y$16$.2Boh8Y80U.RaFr1sFdaKuP5/B2Z3I8OM7vUTUvPzD2UEG3VMcXra

The first significant digit in any number must be​ 1, 2,​ 3, 4,​ 5, 6,​ 7, 8, or 9. It was discovered that first digits do not occur with equal frequency. Probabilities of occurrence to the first digit in a number are shown in the accompanying table. The probability distribution is now known as​ Benford's Law. For​ example, the following distribution represents the first digits in 226 allegedly fraudulent checks written to a bogus company by an employee attempting to embezzle funds from his employer.

Using the table below and a significance level of a=0.01, complete part​ (a) below.

(a) What is the test​ statistic? (round to three decimal places as needed)

Company : EMIRATES AIRLINE

4.        Page 1-2: Briefly Describe the business, mission and vision of the Emirate Airlines

5.        Page 3-4: Briefly Describe your strategic management (what and why it is important)

6.        Page 4-6: Briefly Describe how the Emirati company manages the topic and the SWOT

7.        Page 7-9: Give Five suggestions to improve the topic.  

8.        Page 10: Five lessons you have learnt in doing this assignment.

9.        References