The data in the table is the number of absences for 7 students and their corresponding grade.

Step 3 of 5 : Calculate the estimated variance of slope, s2b1. Round your answer to three decimal places.

The question was:

Finals are over and the marks are in. For all the students who have completed the introductory course to business statistics the distribution of the grades represented a bell-shaped distribution, symmetrical about the average which was 75.90 marks. The standard deviation was 1.40.

Given the information above, answer the following questions using the Empirical Rule.

For full marks your answer should be accurate to at least two decimal places.

a) Approximately what percentage of marks were above 77.30?

b) Approximately what percentage of marks were below 71.70?

c) Approximately what percentage of marks were between 71.70 and 80.10?

I don't want to get answers, I want method steps，Thanks!

The data in the table is the number of absences for 7 students and their corresponding grade. Number of Absences 0 1 2 3 5 6 7 Grade 4.5 4 3.5 3 2.5 2 1.5

Step 1 of 3: Calculate the correlation coefficient, r. Round your answer to six decimal places.

Calculate the coefficient of determination, r2r2. Round your answer to three decimal places.

Determine if r is statistically significant at the 0.050.05 level.

1.

In a certain school district, it was observed that 30% of the students in the element schools were classified as only children (no siblings). However, in the special program for talented and gifted children, 136 out of 392 students are only children. The school district administrators want to know if the proportion of only children in the special program is significantly different from the proportion for the school district. Test at the α=0.02 level of significance.

What is the hypothesized population proportion for this test?
p=
(Report answer as a decimal accurate to 2 decimal places. Do not report using the percent symbol.)

Based on the statement of this problem, how many tails would this hypothesis test have?

• one-tailed test
• two-tailed test

Choose the correct pair of hypotheses for this situation:

Ha:p<0.3

Ha:p≠0.3

Ha:p>0.3

Ha:p<0.347

Ha:p≠0.347

Ha:p>0.347

(A)

(B)

(C)

(D)

(E)

(F)

Using the normal approximation for the binomial distribution (without the continuity correction), what is the test statistic for this sample based on the sample proportion?
z=
(Report answer as a decimal accurate to 3 decimal places.)

You are now ready to calculate the P-value for this sample.
P-value =
(Report answer as a decimal accurate to 4 decimal places.)

This P-value (and test statistic) leads to a decision to...

• reject the null
• accept the null
• fail to reject the null
• reject the alternative

As such, the final conclusion is that...

• There is sufficient evidence to warrant rejection of the assertion that there is a different proportion of only children in the G&T program.
• There is not sufficient evidence to warrant rejection of the assertion that there is a different proportion of only children in the G&T program.
• The sample data support the assertion that there is a different proportion of only children in the G&T program.
• There is not sufficient sample evidence to support the assertion that there is a different proportion of only children in the G&T program.

2.

In a certain school district, it was observed that 29% of the students in the element schools were classified as only children (no siblings). However, in the special program for talented and gifted children, 122 out of 374 students are only children. The school district administrators want to know if the proportion of only children in the special program is significantly different from the proportion for the school district. Test at the α=0.01 level of significance.

What is the hypothesized population proportion for this test?
p=

(Report answer as a decimal accurate to 2 decimal places. Do not report using the percent symbol.)

Based on the statement of this problem, how many tails would this hypothesis test have?

• one-tailed test
• two-tailed test

Choose the correct pair of hypotheses for this situation:

Ha:p<0.29

Ha:p≠0.29

Ha:p>0.29

Ha:p<0.326

Ha:p≠0.326

Ha:p>0.326

(A)

(B)

(C)

(D)

(E)

(F)

Using the normal approximation for the binomial distribution (without the continuity correction), was is the test statistic for this sample based on the sample proportion?
z=
(Report answer as a decimal accurate to 3 decimal places.)

You are now ready to calculate the P-value for this sample.
P-value =
(Report answer as a decimal accurate to 4 decimal places.)

This P-value (and test statistic) leads to a decision to...

• reject the null
• accept the null
• fail to reject the null
• reject the alternative

As such, the final conclusion is that...

• There is sufficient evidence to warrant rejection of the assertion that there is a different proportion of only children in the G&T program.
• There is not sufficient evidence to warrant rejection of the assertion that there is a different proportion of only children in the G&T program.
• The sample data support the assertion that there is a different proportion of only children in the G&T program.
• There is not sufficient sample evidence to support the assertion that there is a different proportion of only children in the G&T program.

The purpose of this assignment is to provide students with an opportunity to develop a framework for the development of a database that would support a Post-operative Follow-Up Module in an Ambulatory Surgery Center.

Please read the article contained in this link and answer the following questions: [Article about Structured Vs. Unstructured Data].

1. What are the critical issues that Post-Anesthesia Care Unit (PACU) staff must address when contemplating the development of a Post-operative Follow-Up Module?

2. When considering the issue of recording post-operative complications, should the clinical staff rely more on structure or unstructured data? Please provide a rationale for your answer. Please see Reading Assignment – Week 03 for a discussion on the merits of structured versus unstructured data.

3. What hesitations might IT Staff express when considering the prospect of developing a module for the collection of post-operative discharge follow-up data in an Ambulatory Surgical Center?   Might the anticipated replacement of the entire legacy EHR system in approximately 18 months factor into the decision of the IT staff with regard to this project?

The data in the table is the number of absences for 7 students and their corresponding grade.

Step 1 of 5: Calculate the sum of squared errors (SSE). Use the values b0=4.1440 and b1=−0.3047 for the calculations. Round your answer to three decimal places.

Step 2 of 5: Calculate the estimated variance of errors, Round your answer to three decimal places.

Step 3 of 5: Calculate the estimated variance of slope, . Round your answer to three decimal places.

Step 4 of 5: Construct the 95% confidence interval for the slope. Round your answers to three decimal places.

Step 5 of 5: Construct the 90% confidence interval for the slope. Round your answers to three decimal places.

The purpose of this assignment is to provide an opportunity for students to apply the nursing process while planning education to meet the needs of patients.

Instructions:
Develop a teaching plan based on an assigned scenario or case. Determine what elements you would include in your assessment of the learner. Identify anticipated or expected learner needs. Select and prioritize evidence based teaching strategies that would best meet the needs of the learner. Describe the resources you would provide to enhance learning. Explain methods that would be used to evaluate learning outcomes. Provide rationales for elements of your teaching plan supported by references from the required course reading assignments. Use the teaching plan format assigned. The competencies contained in the Teaching Plan Rubric will be assessed through this assignment.

Students are sitting in a classroom and listening to a lecture. If the lecture has a sound level of 65 dB to the student sitting in the front row, what is the sound level according to another student sitting 3 times further away?

Show all the steps.

In a certain school district, it was observed that 33% of the students in the element schools were classified as only children (no siblings). However, in the special program for talented and gifted children, 152 out of 386 students are only children. The school district administrators want to know if the proportion of only children in the special program is significantly different from the proportion for the school district. Test at the α=0.01α=0.01 level of significance.

What is the hypothesized population proportion for this test?
p=
(Report answer as a decimal accurate to 2 decimal places. Do not report using the percent symbol.)

Based on the statement of this problem, how many tails would this hypothesis test have?

• one-tailed test
• two-tailed test

Choose the correct pair of hypotheses for this situation:

(A)

(B)

(C)

(D)

(E)

(F)

Using the normal approximation for the binomial distribution (without the continuity correction), what is the test statistic for this sample based on the sample proportion?
z=
(Report answer as a decimal accurate to 3 decimal places.)

You are now ready to calculate the P-value for this sample.
P-value =  
(Report answer as a decimal accurate to 4 decimal places.)

This P-value (and test statistic) leads to a decision to...

• reject the null
• accept the null
• fail to reject the null
• reject the alternative

As such, the final conclusion is that...

• There is sufficient evidence to warrant rejection of the assertion that there is a different proportion of only children in the G&T program.
• There is not sufficient evidence to warrant rejection of the assertion that there is a different proportion of only children in the G&T program.
• The sample data support the assertion that there is a different proportion of only children in the G&T program.
• There is not sufficient sample evidence to support the assertion that there is a different proportion of only children in the G&T program.

In a class of 25 students the average grade on a quiz is 16.85, with a sample standard deviation of 4.75. The grades are known to be normally distributed. a. Determine the standard error of the mean. b. Determine the 98% confidence interval for the class grades. c. If you wanted a narrower interval, would you increase or decrease the confidence level?