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What would be the primarily purpose of your visually reported data? What specific type of visually reported data might you use? What type of decision would you expect from those responding to your v
A process produces material which is 30% defective. 15 pieces are selected at random for inspection. What is the probability of exactly 4 defective pieces being found in the sample?
An auto maker estimates that the mileage of its luxury sedan is at least 25 miles per gallon. a random sample of eight such cars had a mean of 23 miles per gallon and the standard deviation of miles
Using the Hypothesis Tests Two Sample file and a .05 significance level, test whether there is a difference in the mean salary for men versus women.
A researcher would like to test the claim that 9 out of 10 doctors prefer Brand X. A sample of 60 doctors is obtained and each is asked to compare Brand X with another leading brand. The data show t
A health club has six tennis courts. The owner hypothesizes that his patrons have no preference for a particular court. He observes how many people play on each court on a particular day. Compute
A chi-square test for independence has df = 2. What is the total number of categories (cells in the matrix) that were used to classify individuals in the sample?
For this sample, 5 of the men preferred color A, and 15 of the women preferred color A. If a chi-square test is used to evaluate the relationship, what is the df value for the chi-square statistic?
If the supplier selects the pairs of earrings at random, what is the chance that the jewelry store gets exactly two sets of platinum pairs?
A random sample of 81 group leaders and supervisors revealed that they worked an average of 6.55 years before being promoted. The population standard deviation was 1.68 years. Using the 99% degree o
In a survey of 500 senior business executives by Business Week magazine, 52% indicated that they felt that even if merit and abilities are equal, people with MBAs often get promoted faster than peop
Of these, 35 indicated they would be interested in joining the recreation center. The chance that all 50 residents in a neighborhood end up being the sample of residents selected is?
Jolly Blue Giant Health Insurance (JBGHI) is concerned about rising lab test costs and would like to know what proportion of the positive lab tests for prostate cancer are actually proven correct th
Of the adult US population 36% has an allergy. A sample of 1200 randomly selected adults resulted in 33.2% reporting an allergy.
The amounts were normally distributed with a standard deviation of 10 and 12 for men and women, what is the probability that man will spend at most an hour?
The subjects will be run in a repeated measures design and the data will be analyzed with the sign test, using a = 0.05 2 tail. Assume N is increased from 15 to 20, what is the power this time?
Adding to your Week 3 paper, prepare and submit a 1,050-1,750-word paper examining the data you have collected, and drawing conclusions based on your findings. In your paper, be sure to include the
The sampling distribution of the sample mean is approximately Normal with mean 40 grams and standard deviation 0.5 grams.
Use the F test to determine whether the price for a 42-inch plasma television and the overall score are related at the .05 level of significance. Calculate the value of the test statistic (to 2 deci
Discuss whether we can conclude that the actual result of 339 mexican-americans is unusual. Does this suggest that the selection process discriminated against Mexican-americans?
In a certain district the need for money to buy drugs is stated as the reason for 75% of all thefts. Find the prob that among the next 5 thefts cases reported in this district
Does the random variable X have a binomial distribution or a Poisson distribution? Kindly explain. If X has a binomial distribution, would it be reasonable to use the Poisson approximation to find P(
The graduate selection committee wants to select the top 10% of applicants. On a standardized test with a mean of 500 and a standard deviation of 100, what would be the cutoff score for selecting th
A snack food manufacturer selected a sample of 15 bags of pretzels off the assembly line and weighed their contents. If the sample mean is 10.0 and the sample standard deviation is 0.15, find the 95
62% of men consider themselves professional baseball fans. You randomly select 10 men and ask each if he considers himself a professional baseball fan. Find the probability that the number who consi