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The random variable X has a binomial distribution with parameters n=100 and p=0.10.What distribution model would be appropriate to use to calculate an approximate value for the probability P(X=10).
The random variable X has a Poisson distribution with mean 40. Give an approximate value of the probability P( 37 less than or equal to X less than 41 ) using the central limit theorem with a cont
In this problem, we explore the effect on the standard deviation of adding the same constant to each data value in a data set. Consider the following data set.
Determine the point estimate of the population mean and margin of error for the confidence interval. lower bound is 16, upper bound is 26.
Signatures to a petition were collected on 676 sheets. Each sheet has enough space for 42 signatures, but on many sheets a smaller number of signatures was collected. The number of signatures per sh
Give an unbiased estimator of the following and give the estimated variance assuming ni=n:
Rolling dice 25 times gives the below results. Using your results, find the relative frequency for each of the values: 2, 3, 4, 5, _ , 12.
What is the probability that a randomly selected family owns both a dog and a cat? What is the conditional probability that a randomly selected family doesn't own a dog given that it owns a cat?
A security camera is used to monitor a particular survillence area to report wheather there is any threat present or not . the probability that the camera correctly detects an actual threat as "thre
a) Show the sampling distribution of x? for male golfers. b) What is the probability that the sample mean is within three strokes of the population mean for the sample of male golfers?
The population proportion is .30. What is the probability that a sample proportion will be within ±.04 of the population proportion for each of the following sample sizes?
Use the reported numbers as the population proportions and assume that samples of 300 adults and 300 youths will be used to learn about attitudes toward Internet security.
How should you calculate confidence interval using quantiles from a t-distribution and with how much degree of freedom? Is it approprait to use in calculating the confidence of interval quantiles
A) What is the lottery's expected profit per ticket? B) What is the lottery's standard deviation of profit per ticket?
The random variable X has a binomial distribution with parameters n=100 and p=0.10. What distribution model would be appropriate to use to calculate an approximate value for the probability P(X=10).
Give an 80% confidence interval for the total number of signatures. How (if at all) does the non-normality of the Number of signatures (with a greatest frequency at the upper end - 42) affect your a
Management will become concerned if more than 10% of the widgets from a particular machine are out of tolerance. Calculate the 5th percentile and the 95th percentile to find the measurements you wo
If an experimenter crosses intelligence with attractiveness in a factorial design in which intelligence has three levels (high, medium, low) and attractiveness has two levels (high and low) the stud
The metropolitan area of Los Angeles-Long Beach, California, is the area expected to show the largest increase in the number of jobs between 1981 and 2013. The number of jobs is expected to increase
If the Bonferroni procedure is used to maintain an overall significance level of .05 for three comparisons, the significance level for each comparison will be set at:
Assume that three industrial processes (A,B and C) are independent. If the probability of successfully working for 8 hours is 0.99 for process A, 0.95 for process B and 0.80 for process C, then
If independent random samples of size n1=n2=8 come from normal populations having the same variance, what is the probability that either sample variance will be at least 7 times as large as the othe