## CHECK THESE SAMPLES OF Stat assigment

...A college statistics has office hours daily. A sample of waiting times to see the in minutes was taken. The waiting times in minutes were: 10, 12, 20, 15, 17, 10, 30, 28, 35, 28, 19, 27, 25, 22, 33, 37, 14, 21, 20, and 23. Assume σ = 7.84. Find the 99% confidence interval for the population mean.
18.8 to 25.8 minutes
2.07 to 42.53 minutes
17.78 to 26.82 minutes
19.5 to 35.1 minutes
Scores on a certain test are normally distributed with a variance of 70. A researcher wishes to estimate the mean score achieved by all adults on the test. Find the sample size needed to assure with 95 percent confidence that the sample mean will not differ from the population mean by more than 2.5 units.
135
44
4706
7
Find the t-value with n... college...

6 Pages(1500 words)Speech or Presentation

...1. Answer: a. Assume outcome of births are independent and probability results in a girl is 0.49. Then P (2 Female) = (0.49) (0.49) = 0.2401 b. Assume outcome of births are independent and probability results in a boy is 0.51.
Then P (2 Boys) = (0.51) (0.51) = 0.2601.
c. Assume outcome of births is independent and probability resulting in a girl is 0.49 and one boy is 0.51.
Then, P (1-boy and 1-girl) = (0.49) (0.51) = 0.2499.
2. Answer
Let x = total number of individuals who took the test
Then,
0.30x = total number of individuals who took the test and attended CPA review
0.70x = total number of individuals who took the test but did not attend the CPA review
Then, let
A = 0.30x (0.60) = 0.18x = number of those who passed the test...

6 Pages(1500 words)Statistics Project

... Question We firs set the null and the alternative hypotheses. The null hypothesis will be de d by (H0) and the alternative hypothesis as (H1)
(H0): μ = 125
(H1): μ ≠ 125
We now calculate the test statistic in order to be able to test the above hypothesis and decide on whether or not to reject or accept the hypothesis. The sample mean is give by $129.50, the sample size is 47 and the sample standard deviation is $18 and that α = 0.10
Z = {Sample mean- μ0}/ δ/√n = {129.50-125} ÷ 18/√47 = 1.714. Since we have a positive value of Z, we will need to pull all the values of α on the right of the mean of the data. Hence we obtain the following results. The value... Question We...

5 Pages(1250 words)Statistics Project

...1. Given that Mean Arrival Rate = µ = 2.5 per hour Now p (x) = e ^- µ * µ^x x! a. Probability exactly arriving = p e^-2.5 * 2.5 1!
= .205
b. Probability of less than 5 customers arriving in an hour = p (1) + p(2) + p(3) + p(4)
= e^-2.5 * (2.5^1/1! +2.5^2/2! +2.5^3/3! +2.5^4/4!)
= .891
c. Expected number of customers in any given 2 hour period = 2* Mean arrival rate per hour
= 2*2.5
=5
d. Probability of 10 or more customers arriving in the next 2 hours = 1- Probability of less than 10 customers arriving in next 2 hours = p(1) +p(2)+……p(10) where Mean arrival rate per 2 hours =5
This can be done manually or obtained using Poisson function in excel
The value comes out as:
p(>=10) = 1-p(<10)
= 1- .968
= .032
2... Given that Mean Arrival Rate = µ = 2.5 per hour Now p ...

9 Pages(2250 words)Statistics Project

...there is statistical significance between the decades growth of 00 and 10, as compared to decade growth in prior years. For the population **stats**, we will be finding the central measures such as the mean, median, and mode, as well as the quartiles. This project will present bar graphs, such as showing the population growth, and pie charts, at least one of which showing percentages of females and males within the community.
Data sources
In this project we are going to source data from various sources, to start with we are going to collect data using personal interviews and questioners. We are going to visit several individuals who are going to fill and give us information about the effect of the bomb blast that occurred....

1 Pages(250 words)Essay

...A Report confirming that Diabetes, compared to other diseases, is the number one health threat in the UK. and Section # of >
INTRODUCTION
In this study, I have researched on the rise of Diabetes, which is at an alarming rate, compared to other chronic diseases in the UK. I will add a global context to my study. The rise in Diabetes does not prevail only in the UK but also other countries mostly developing nations. Also I have added to my research that if Diabetes is taken care off, then many patients could be saved from severe complications like loss of vision, high blood pressure, elevated cholesterol levels and kidney failure.
The aim of this study is to investigate how patients with Diabetes... Report confirming that Diabetes, compared...

8 Pages(2000 words)Essay

...Significance F
Regression
1
1,393,910,622,490.20
1,393,910,622,490.20
1.59
0.23
Residual
13
11,400,278,322,101.10
876,944,486,315.47
Total
14
12,794,188,944,591.30
Interpretation:
From the above table, it is inferred that the regression coefficient is not significant since the probability of significance is 0.23 (>0.05), hence the independent variable weeks on release is not a better predictor for the dependent variable weekend total.
Table of t-statistics:
Variable
Coefficients
Standard Error
t **Stat**
P-value
Intercept
1092063.395
402902.6817
2.710489268
0.01783361
Weeks on Release
-119506.7828
94789.69854
-1.260757072
0.229554708
Interpretation:
From the above table it is inferred that the regression coefficient is not...

7 Pages(1750 words)Coursework

...STATISTICAL PROGRAMMING Pure integer programming problem is a linear programming whereby all the variables are required to be integers (Render, et al. 2012). The Linear programming problem below is a pure integer LP problem but also has mixed sets of integers, thus mixed integer linear programming.
Minimize Z=8X12+4X1X2+12X22
Subject to: 6X1+X2≥50
X1+X2≥40
A statistical programming that uses a scale of 0-1 is a simple and powerful integer scale. Zero-one linear programming involves problems (Braaksma, et al, 2012)), in which the variables are restricted to be either 0 or 1 for instance,
Minimize Z=8X1+6X2
Subject to: 4X1+5X2≥10
X1+X2≤3
X1 X2 ≥0
X1 X2=0...

1 Pages(250 words)Assignment

... September 13, Personal ment: PhD in Mass Communications I have affirmed a genuine interest in the field of mass communications through enhanced awareness on its significance in various facets of life. Mass communication, as a medium of relaying crucial information on a wider range of audience, is an instrumental contributor to achieving specifically identified goals: to persuade, to inform, to educate, or to express advocacies to relevant societal issues and concerns. Due to the pertinent relevance of mass communications as a transparent vehicle for disseminating messages, one acknowledged that gaining advanced knowledge in this particular endeavor poses continued learning opportunities and the chance to influence a positive... September 13, ...

3 Pages(750 words)Personal Statement

...Computer sciences and information technology a. How would you suggest the databases and data communications facilities beconfigured for First State Bank?
Approach in improving the speed of the customer’s service on the stated segments is achievable only by consideration of the database configuration and correct configuring of the desired communication facilities attached or peripheral to the central system. Every change in the facilities that aims at increasing processor speed, providing partial storage capacity and provision of the consequent speed relay is highly considerable. After determining the processor speed of the central mainframe computer, further corrections would take on the mode of network structure or architecture... sciences...

6 Pages(1500 words)Assignment