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The amount of money requested in the home loan applications at Dawn River Federal Savings are approximately normally distributed with a mean of $70,000 and a standard deviation of $20,000. Twenty percents of the loans are larger than what amount?
CD Camera produces a new camera that it claims can take an average of more than 7 photographs per second. A test of 36 randomly selected cameras yielded the following sample values:
Find the probability that of 800 randomly selected incoming first-year students, at least 260 have elected to enroll in the course.
An auditor for a large oil corporation has taken a random sample of monthly credit card charges for 32 individual (non-corporate) accounts.
Find the calcium level that is the borderline between low calcium levels and those not considered low. Carry your intermediate computations to at least four decimal places.
53% of all recorded births are boys if 6 babies born in this hospital are selected at random find the probability that two of the babies selected are boys.
Determine probability that number of boats constructed next month will be between 4 and 7 (both inclusive).
Each with n = 6 participants. Compute the pooled variance and the estimated standard error for the mean difference. (Use 3 decimal places.)
What is the probability that 25% or fewer male employees will indicate that they have to pick up the slack for moms working flextime?
The life expectancy of computer terminals is normally distributed with a mean of 4 years and a standard deviation of 10 months. What is the probability that a randomly selected terminal will last more than 5 years?
A population is Normally distributed and has a σ = 24. Samples of size 25 have a sample mean of 100. Find the 90% confidence interval for the population mean.
Finding the Equation of the Regression Line and Making Predictions. Find the regression equation,
What is the 99% confidence interval?
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