Stats Help for College-level Students

Statistics

The Electrocomp Corporation manufactures two electrical products: air conditioner and large fans. The assembly process for each is similar in that both require a certain amount of wiring and drilling. Each air conditioner takes 3 hours of wiring and 2 hours of drilling. Each fan must go through 2 hours of wiring and 2 hours o ...continues

Help statistics

Michelob conducts a survey of beer drinkers. Michelob wants to determine which markets and methods of advertising would be most efficient for reaching their potential market for Michelob Light. The survey results indicate that of 200 Michelob customers surveyed 138 had bought Michelob Light on at least one occasion in the past ...continues

Sampling design, sample size, population proportion, finite population correction factor, standard error, point estimate of the population mean

1) Which of the following might have resulted from poor sampling design for a survey that attempts to determine the political opinions of the residents of a state? a. The respondents misrepresent their level of income b. The sample fails to include a representative portion of minorities c. In a random sample, 90% indicate tha ...continues

Sampling and hypothesis testing: test statistic, average length, preacher’s sermons, stratified random sample, judgment sample, sample size, type of error, probability, proportion, confidence interval

1) A woman and her son are debating about the average length of a preacher’s sermons on Sunday morning. Despite the mother’s arguments, the son thinks that the sermons are more than twenty minutes. For one year, he has randomly selected 12 Sundays and found an average time of 26.42 minutes with a standard deviation of 6.69 min ...continues

Statistics Problem

For a given data set Mean = u=200 and standard deviation =30. What is the probability that the mean of a sample of n=36 a) would be greater than 208? b) Less than 195? c) Between 192 and 210? d) Not more than 212?

Forecasting: Time Series. The table below presents 4 years of quarterly sales for Mary’s Mongoose Menagerie. Marty wants to know what quarterly sales will be in 2002. Project quarterly sales for 2002 using trend analysis. Now, project quarterly sales for 2002. Revise quarterly sales number for season of the year.

The table below presents 4 years of quarterly sales for Mary’s Mongoose Menagerie. Marty wants to know what quarterly sales will be in 2002. Project quarterly sales for 2002 using trend analysis. Now, project quarterly sales for 2002. Revise quarterly sales number for season of the year. Winter 1998 20000 Winter 1999 2200 ...continues

Is it accurate to conclude that John is twice as motivated as Cindy? Is it accurate to conclude that John is twice as motivated as Cindy? Is it accurate to conclude that, because of her score of 0, Linda totally lacks motivation? Suppose that on item #27, Matthew had circled a rating of 5. What are the real upper and lower limits of this measurement? Would a person's total motivation score - figured by adding up the numbers they circled for each item, be considered a discrete or a continuous variable? How could one measure motivation with a continuous variable?

The amount of motivation of an individual was measured by a self report scale that has 32 items each scaled as shown below: 0……..1……..2……..3…….4……….5……...6………..7 never hardly ever sometimes very often The following scores were obtained: Mishelle 192, Justin 128, Matthew 183, Cindy 51, Julie 218, John ...continues

Time Line Series Forecasting

The table attached presents 4 years of quarterly sales for Mary’s Mongoose Menagerie. Marty wants to know what quarterly sales will be in 2002. Project quarterly sales for 2002 using trend analysis. Now, project quarterly sales for 2002. Revise quarterly sales number for season of the year.

Linear

The Electrocomp Corporation manufactures two electrical products: air conditioner and large fans. The assembly process for each is similar in that both require a certain amount of wiring and drilling. Each air conditioner takes 3 hours of wiring and 2 hours of drilling. Each fan must go through 2 hours of wiring and 1 hour of ...continues

Statistics

Test hypothesis