+1-415-315-9853

info@mywordsolution.com

## Statistics

Deriving the regression equation, testing the model fit and obtain confidence interval for a given values.

The data below contains the population of the United States for the years 1930 through 1999. Fit a linear trend to these data.

a) What is the resulting regression equation?

b) What percentage of the variation in y has been describeed by the regression?

c) Based on your answer in part b and on any other regression results you obtain, how well does the equation fit the data? Does a good fit ensure that forecasts for future years would be accurate?

d) Use the equation developed to predict the U.S. population in the years 2000 and 2001. Find out a point prediction and a 95 percent prediction interval.

e) How reliable do you believe the forecast in part d might be? What factors might influence this correctness?

 YEAR POPULATION 1930 123,076,741 1931 124,039,648 1932 124,840,471 1933 125,578,763 1934 126,373,773 1935 127,250,232 1936 128,053,180 1937 128,824,829 1938 129,824,939 1939 130,879,718 1940 132,122,446 1941 133,402,471 1942 134,859,553 1943 136,739,353 1944 138,397,345 1945 139,928,165 1946 141,388,566 1947 144,126,071 1948 146,631,302 1949 149,188,130 1950 152,271,417 1951 154,877,889 1952 157,552,740 1953 160,184,192 1954 163,025,854 1955 165,931,202 1956 168,903,031 1957 171,984,130 1958 174,881,904 1959 177,829,628 1960 180,671,158 1961 183,691,481 1962 186,537,737 1963 189,241,798 1964 191,888,791 1965 194,302,963 1966 196,560,338 1967 198,712,056 1968 200,706,052 1969 202,676,946 1970 205,052,174 1971 207,660,677 1972 209,896,021 1973 211,908,788 1974 213,853,928 1975 215,973,199 1976 218,035,164 1977 220,239,425 1978 222,584,545 1979 225,055,487 1980 227,224,681 1981 229,465,714 1982 231,664,458 1983 233,791,994 1984 235,824,902 1985 237,923,795 1986 240,132,887 1987 242,288,918 1988 244,498,982 1989 246,819,230 1990 249,464,396 1991 252,153,092 1992 255,029,699 1993 257,782,608 1994 260,327,021 1995 262,803,276 1996 265,228,572 1997 267,783,607 1998 270,248,003 1999 272,690,813

Statistics and Probability, Statistics

• Category:- Statistics and Probability
• Reference No.:- M922910

Have any Question?

## Related Questions in Statistics and Probability

### Exposure to medicine x during pregnancy was investigated

Exposure to medicine 'x' during pregnancy was investigated for 108 mothers of children with congenital defects and 108 mothers of normal controls. The researchers examined exposure to medicine 'x' during the first trimes ...

Be sure to read each question carefully and answer all parts. For all Stata questions, be sure to provide the log output (which should be edited and commented so that it is easier to grade).  Q1. Find an article THAT YOU ...

### Thirteen students were randomly selected from the college

Thirteen students were randomly selected from the College of Public Health and their diastolic blood pressure was tested. The sample mean and standard deviation were 80.9 mmHg and 2.1 mmHg respectively. What is the obtai ...

### 1 what are time-series research designs and how are they

1. What are time-series research designs, and how are they used to learn about changes in behavior over time? 2. What types of independent variables can be used in participant-variable research designs, and what conclusi ...

### Recommendationsremember that your recommendations should be

Recommendations: Remember that your recommendations should be as authentic to a real-world situation as possible. If you are going to be asking your organization to spend money on training, for example, your justificatio ...

### Consider the three alternative allocations of money m in an

Consider the three alternative allocations of money (m) in an economy composed of three people, with people labeled A, B, C, and alternative allocations labeled X, Y, Z. The values in the 9 cells are the moneys accruing ...

### Jolie takes 45 minutes to do her statistics homework if the

Jolie takes 45 minutes to do her statistics homework. If the mean is 38 minutes and the standard deviation is 3, calculate Jolie's z score. Once calculated, interpret your findings in terms of Jolie's performance.

### While some countries tend to favor expansion of the

While some countries tend to favor expansion of the European Union, others generally oppose it. Entering a union agreement with other countries has both benefits and drawbacks for each member country. In what ways do you ...

### The potential revenues of all projects are in fact

The potential revenues of all projects are in fact uncertain. The company determines that the revenue for project 1 is following a uniform distribution ranging from \$1,200,000 to \$2,000,000. The revenue for project 2 is ...

### Explain how you would conduct the study in given question

Explain how you would conduct the study in given question as a within-subjects design. Question:- Imagine that you were conducting an experiment to examine the effect of generous role models on children's willingness to ...

• 13,132 Experts

## Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

### Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

### Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

### Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

### Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

### Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen