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A couple plans to have 4 children. List the 16 different possible outcomes according to the sex of each child? Assume that these outcomes are equally likely. Find the probability of getting all girls. Find the probability of getting at least one child of each sex. Find the probability of getting exactly two children of each sex.
A game involving a pair of dice pays out $4 with probability 16/36, costs you $2 with probability 14/36, and costs you $6 with probability 6/36.
You want to create a 90% confidence interval for the true average number of yards per game he throws. What is the margin of error for this estimate?
Our bodies have a natural electrical field that is known to help wounds heal. Does changing the field strength slow healing? A series of experiments with newts investigated this question.
A loaf of bread is normally distributed with a mean of 22 oz and a standard deviation of 0.5 oz. What is the probability that a loaf is more than 22.25 oz?
When 6 telephones are received, all of them are free of defects. What is the written description of the complement of the above event?
Data were collected for a sample of 64 customers. Assume a population standard deviation of $6. At 95% confidence, what is the margin of error?
A large internet retailer is studying the lead time (elapsed time between the time when the order is placed and the time it is filed). The table below gives the lead times (in days) for a random sample of recent orders.
A City Survey states that 70 percent of all business owners favor increasing the parking fees. The city has commissioned a random sample of n = 100 business owners.
Critically illustrate out the purpose of developing frequency distribution? Describe the relationship between the relative frequency and the cumulative frequency.
Of 346 vending machines tested, 12 are found to be defective. Construct the 98 % confidence interval for the proportion of all defective vending machines.
We recalculated our comparison of ideal number of children, this time only for women, separating them into two groups, those who indicated that they were "very happy" or "not at all happy" with life.
Define exponential function. Give an example of such function and graph it. Discuss what are common characteristics of all exponential functions. (i.e. domain/range/intercepts/asymptotes, general behavior)
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