Stats Help for College-level Students

Working with sampling distribution and probability.

A southern state has an unemployment rate of 6%. The state conducts monthly surveys in order to track the unemployment rate. In a recent month, a random sample of 700 people showed that 35 were unemployed. a) If the true unemployment rate is 6%, describe the sampling distribution of p^. b) Find P(p^ >= 0.05) c) Assum ...continues

Calculate the probability that the sample mean of a variable falls in some range.

At a computer manufacturing company, the actual size of computer chips is normally distributed with a mean of 1 centimeter and a standard deviation of 0.1 centimeter. A random sample of 12 computer chips is taken What is the probability that the sample mean will be below 0.95 centimeters?

Statistics - Data Models Topic

10) Clearly define the decision variables, the objective function and each constraint. From the Solver Solution, include the value of objective function and each of the decision variables.

Statistics - Data Models Topic

15) Use QM Transportation method to solve this problem, including the decision variables, the value of objective function, and the values of decision variables from the solved QM Transportation Method.

Statistics - Data Models Topic

28) Use QM Assignment method to solve this problem, including the decision variables, the value of objective function, and the values of decision variables from the solved QM Assignment Method.

An introductory statistics study guide including definitions of terms and types of variables and scales.

Terms defined and/or explained: randomness, independence, continuous, discrete, and ranked variables, attributes, derived and transformed variables, nominal, ordinal, interval, and ratio scales, scale conversions, mode, median, mean, range, standard deviation, sum of squares, variance, degrees of freedom, normal distribution, pa ...continues

Working with proportion of population given mean, standard deviation and a subject's score.

mean=76, standard deviation=12; Subject Q had a score of 70. a. What proportion of the population scored below Q? b. If you changed the mean to 100 and the standard deviation to 10, what would Q's score be?

Consider the three values of mean and the three values of standard deviation

I need to know how to do this in EXCEL.. Thank you The question below appears in the attached file as well. You may find it easier to read in the attachment. Given the following population data: 1,2,4,5,8,9,12, and the lists of all samples of size 2 and 5: Samples of n=2 -xbar 1,2--1.5 1,4--2.5 1,5--3 1,8----------- ...continues

Construct a 95% Confidence interval and determine if a sample mean falls within the bounds.

Dunkin Donuts advertises that a dozen of their donuts weighs about 43 oz. A certain baker has figured out that she can stay out of trouble with her manager if each donut weighs about 3.6 oz. To test her donut-making process, she randomly selects thirty-one donuts after baking and weighs them. The average of the sample is 3.50 ...continues

Case analysis (Statistics > Hypothesis Testing)

Case Analysis: Riverside Chamber of Commerce ABC Corporation of California publishes a variety of statistics, including the number of individuals who got a new job during the past 12 months and the mean length of time the individuals have been on the job. The Statistical Analysis Department of ASBC Corporation reported that th ...continues