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A local fast-food restaurant has determined that 10% of drive-thru orders are filled incorrectly. Suppose 5 orders are randomly selected. What is the probability that more than one of the orders is filled incorrectly?
Suppose the manufacturers claim is right, determine the probability the mean of sample is 47,840 miles or less?
How large a sample of one-bedroom apartments would be needed to estimate the mean within $20 with 90% confidence?
what is the equation that predicts mortgage amount from interest rate? Compute the slope of the straight line. compute the y-intercept of the straight line.
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
Verify value of t for the independent Variable, using formula. (That is, using formula in the Formula Sheet compute the t statistic , given data provided in the print out).
Assume that a simple random sample is selected from a normally distributed population, use eith the P-value method or the tradiitonal method of testing hypotheses.
When the rats In the sample reach 10 weeks old, each rat is weighed. The mean weight for this sample is M=974. Sketch the appropriate distribution, and locate the critical region for the alpha level =.05.
Describe the data appear the strength of the relationship among variables is sufficient to warrant using linear regression forecasting.
Using the .05 level of significance, what should we conclude about the theory that 24 hours is the natural cycle? That is, does the average cycle length under these conditions differ significantly from 24 hours?
What does central limit theorem say about distribution of John's average payoff after 365 bets in a year?
Assuming the manufacturer's claim is true, what is the probability the consumer group's sample has a mean life of 52 or fewer months?
Let the random variable X denote the number of emergency calls received by the campus police office each day. The probability mass function of X is given by:
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