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Stanford-Binet IQs
Stanford-Binet IQs for children are approximately Normally distributed and have m = 100 and s = 15.
What is the probability that a randomly selected child will have an IQ of 115 or above?
Compute the Pearson correlation. Multiply each X value by 2 and compute the Pearson correlation for the modified scores.
Let (X, Y) be a random point chosen uniformly on the region R = {(x, y) : |x|+|y| = 1}.
A physician claims that as soon as his patients have a positive pregnancy test, he is generally able to predict the sex of the baby and that his probability.
Suppose we have a population of scores with a mean = 200 and a standard deviation = 10. Assume that the distribution is normal. Provide answers to the following questions:
A researcher believes that the percentage of people who exercise in California is greater than the national exercise rate. The national rate is 20%.
Determine the probability distribution for the number of Hondas in a sample of three cars chosen from the top nine and what is the likelihood that in the sample of three at least one Honda is included?
If the operations manager selects an error bound for the difference in the proportion nonconforming before and after implementation of process changes as 4%, with a probability of 0.90, what sample size should be selected?
the number of customers at quiet morning bakery is believed to follow a poisson distribution with a mean of 2 customers
Election polling Gloria Chavez and Ronald Flynn are the candidates for mayor in a large city. We want to estimate the proportion p of all registered voters.
A company that produces cell phone batteries claims their new battery last more than 30 hours.
This problem belongs to Basic Statistics and it discusses about preparing univariate and multivariate tests for measuring cholesterol among two groups
if a population has a standard deviation of 18 what is the minimum number of samples that need to be averaged in order
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