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For the time being, the air traffic control system in the United States is run by the federal government
In a 2-tail hypothesis test on a population mean, what is the p-value or OSL of the hypothesis test if the calculated test statistic based on 11 observations
Use the 5 step hypothesis testing procedure. Use z or t tests and determine standard deviation for each set of data.
Customers were waiting in line too long so data was collected. The mean time was 28 minutes. One month later a sample of 127 customers was selected
Procyon Mfg. produces tennis balls. Weights are supposed to be normally distributed with a mean of 2.035 ounces and a standard deviation of 0.002 ounces
The MacBurger restaurant chain claims that the waiting time of customers for service is normally distributed, with a mean of 3 minutes and a standard deviation
The American Sugar Producers Association wants to estimate the mean yearly sugar consumption. A sample of 16 people reveals the mean yearly consumption
You are the Vice President for Human Resources at XYZ Investment Management, Inc. Your employees have recently complained about their long working hours
Describing the methodology involved in Hypothesis testing. It is required that you include an example of a business situation
You conduct a survey of a sample of 25 members of this year's graduating marketing students and find that the average GPA is 3.2.
Find the sample proportions and test statistic for equal proportions. Is the decision close? Find the p-value.
The probability that an experiment has a successful outcome is 0.8. The experiment is to be repeated until five successful outcomes have occurred
Semester GPAs are compared for seven randomly chosen students in each class level at Oxnard University. Does the data prove a significant difference in mean GPA
The following regression results relate to a study of the salaries of public school teachers in Midwestern city.
The analyze results of two instruments A & B, show the following data:
The mean math score for fifth grade students at Smart Elementary is 90 with a standard deviation of 8. The fifth grade students are tested each year
Formulate the null and alternative hypotheses for a hypothesis test. Identify the population and describe how to select a random sample for a hypothesis test
Historically, the Giant's opening home game has been on a Sunday with an average crowd of 60,000. During the last 5 years, they have opened on Saturday
Five cruise missiles have been built by an aerospace company. The probability of a successful firing is, on any test, 0.95.
The coach of a soccer team claims that the mean height of the players on his team is less than 70 inches (which is the mean height of American males).
Your distributor is to deliver a large quantity of sweaters. You have ordered
Talk about the effect of no smoking laws on the tobacco industry. Will the trend in no smoking laws affect cigarette sales? You can develop a null from that.
Conduct a test of hypothesis that the mean price (current) of the stocks on Sample A is the same as the mean price (current) of all stocks in sample B
A newly installed automatic gate system was being tested to see if the number of failures in 1,000 entry attempts was the same as the number of failures