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1. Estimate the area under the Normal Distribution from the mean to a z-score of -2.07.
2. Estimate the z-score that corresponds to an area of 0.5557 under the Normal Distribution.
3. The average age of statistics students nationwide is 22. The standard deviation is 2.5 years. Assume the age is a normally distributed variable. Find the probability that one student selected at random is older than 23.
4. You will create a statistics quiz of 15 questions by using a computer program that randomly generates questions. The program has a total of 60 questions stored. Any quizzes that have the same questions just in a different order are considered to be the same quiz. How many different arrangements of quizzes are possible? You may leave your answer in "probability notation."
5. You are an American spy in eastern Afghanistan. At 6 o'clock, you are to transmit a secret message to your contact by taping a sequence of 3 capital letters of the alphabet in your window (example: ABC). Each arrangement of letters will be viewed as a different message by your contact. No letter can be used more than once. How many different messages are possible? You may leave your answer in "probability notation."
To conclude the effect of a new fertilizer on productivity of tomato plants one group of plants is treated with the new fertilizer as a second group is grown without such treatment. The number of ripe tomatoes produced by each group is counted.
Micron Electronics makes both desktop and laptop personal computers that they sell directly to customers by phone or over the Internet.
If a student guesses on each question, what is the probability that the student will pass the test?
Suppose that the number of babies born during an hour at a hospital's maternity wing follows a Poisson distribution with a mean of 4 per hour.
Using ANOVA summary table, find out if regression model is significant.
This table gives three measurements of 10 samples made in a production run. Use statistical process control method to solve problem.
To find the probability values in case of raw data, binomial, normal
Category of decision rule which contains maximax decision rule is?
At one excavation site 8641 pot shards have been found that not yet been cleaned and identified. What is the probability that:
Create a 99 percent confidence interval for difference in means between Line B and Line C.
Calculate the value of Pearson correlation. Illustrate what information is provided by the numerical value of the Pearson correlation.
Identify Independent and Dependent variable being investigated. Formulate the hypothesis statement regarding your research issue.
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