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6.2% of DVD players of a certain type are defective. Let the random variable X represent the number of defective DVD players among 200 randomly selected DVDs of this type. If you wish to find the probability that X is less than 8.
(a) Does the random variable X have a binomial distribution or a Poisson distribution? Explain.(b) If X has a binomial distribution, would it be reasonable to use the Poisson approximation to findP(X < 8)? Why or why not?(c) Then what is P(X < 8).
Estimate using three day weighted moving average. Estimate sales for the next day using a three-day weighted moving average where the weights
An independent testing services road-tested 36 of the automobiles.
Based on these data, what is the probability that next Christmas will be dry and based on the data,what is the probability that next Christmas will be rainy or cloudy and dry?
Can I get some help for me to understand what is the difference between an equation and an expression? Can you solve for a variable in an expression? Could you explain.
Does this sample provide enough evidence to conclude that self-esteem scores for group-participation adolescents are significantly different from those of the general population? Use a two-tailed test with α = .01.
The heights of 40 randomly selected people and the heights of their mothers are recorded. Statdisk is used to run a linear correlation and regression analysis. The partial results are provided below:
What is the difference between McNemar's Test and the chi-square test for 2X2 tables? When do we use each test?What is a discordant pair and concordant pair? Also, which type of pair is used in the McNemar's test?
Clearly identify the independent and dependent variables you would study, including the number of levels of the independent variable.
Find the probability that a sample of 16 tires will have an average tire life of more than 52000 miles, give that the mean tire life is 50000miles and the standard Deviation is 8489.13.
Develop a p chart with 3-sigma control limits and evaluate whether the process is in statistical control
The Bee line Café is well known for its popular homemade ice cream, which it makes in a small plant in back of the café. People drive long distance to buy the ice cream.
For the most recent year available the mean annual cost to attend a private university in the US was $26,889. Assume the distribution of annual costs follows a normal probability distribution and the standard deviation is $4,500. 95% of all studen..
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