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The following question was put on a questionnaire:
What was your last salary?
a) 0 -10,000b) 10,001 - 20,000c) 20,001 - 30,000d) 30,001 - 40,000e) 40,001 - 50,000
What type of data is being requested?
If 300 stolen cars are randomly selected, what is the mean and standard deviation of the number of cars recovered after being stolen?
Overall, the amount of work-hours involved in the festival preperation is normally distributed around 100 hours withn a standard deviation of 12 hours.
It is the last play of the game and the famous coach's team is on offense. If it makes 5 yards or more, it wins; if not, it loses. Both sides choose Nash equilibrium strategies.
If you want to provide a warranty so that only 2% of CD player will be replaced before the warranty expires, what is the time length of the warranty? c) What is p67?
Abnormalities that might lead to cancer. Provide a descriptive statistic that could be used to estimate the number of women out of 1000 in this population.
Camera, 28% had a music player, and 22% had both. What is the probability that a cell phone sold last month had a camera or a music plaer?
Based on the answers to a through d, decide whether or not to reject the null hypothesis at the given significance level. Explain your conclusion in the context of the problem.
If 36 sand dollars are selected at random for collection, determine the probability that average diameter of those sand dollars is more than 3.80 centimeters. Suppose that variable is normally distributed.
Consider the experiment of rolling a pair of dice. Suppose that we are interested in the sum of the face values showing on the dice.
Study the effect of temperature on yield in a chemical process, four batches were produced at each of three temperature levels and construct an analysis of variance table
Determine the probability that no more than 10 firms are perfectly competitive?
The standard deviation of the expenditure is $3. A simple random sample of 64 students is taken. What are the expected value, standard deviation, and shape of the sampling distribution of the sample mean?
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