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What are two risks of using SPC in decision making for an organization?
If 40 of this kind of question are selected at random and checked, find the probability that 4,5 or 6 questions will be answered incorrectly.
what is the probability in percent that a variable will be within plusmn1.5 standard deviations of the
suppose a manufacturing company makes a certain item. the time to produce each item is normally distributed around a
Mean and standard deviation. Enter the following data into the Data tab in the One-Variable Statistical Calculator applet: 8, 9, 10, 11, 12. Examine the Statistics tab and report the mean and the standard deviation.
Assume the population is normally distributed and use a? t-distribution to construct a 90?% confidence interval for the population mean µ.
Consider a hypothesis test of H0: μ = 0 against H1: μ > 0 where μ is the mean percent change in total body bone mineral content of young women. The population standard deviation is σ = 2. The level of significance for the test is α = 0.05.
Create a 90% confidence interval for the percentage of deer that may carry such ticks.- If the scientists want to cut the margin of error in half, how many deer must they inspect?
With reference to Exercise 85, find the distribution function of the random variable X and plot its graph. Use the distribution function of X to find
An exam consists of 10 true or false questions. If a student guesses at every answer, what is the probability that he or she will answer exactly six questions correctly? (Round the answer to three decimal places)
Should the hypothesis of equal population means be accepted or rejected at the 5% level of significance?
What are the considerations to think about/discuss in accepting or rejecting this order? Would you accept or reject the order? Why?
Calculate the effect size index for the students' Doritos data, and interpret it using the conventions that researchers use.
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