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From a given population, it is known that 68% are female, 20% are smokers, and 16% are females who smoke. What is the probability that a randomly selected person from this population will be female or a smoker?A. 0.68B. 0.20C. 0.72D. 0.88
Complete the ANOVA table. Carry out a test of hypothesis on each of regression coefficients. Could you delete any of the variables?
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
Triathalon Times Jeff Parent is a statistics instructor who participates in triathalons. Listed below are times (in minutes and seconds) he recorded as riding a bicycle for five laps through each mile of a 3-mile loop.
Estimate the percentage who weigh more than 180 pounds? Assume that we want 96% confidence that the error is no more than 1.5 percentage points.
A test was conducted to find out whether gender of a spokesperson affected the likelihood that consumers would prefer a new product. A survey of consumers at trade show employing a female spokesperson determined that 70 out of 150 customers prefe..
The average salary for graduates entering the actuarial field is $40,000. If the salaries are normally distributed with a standard deviation of $5,000, find the probability that An individual graduate will have a salary over $45,000.
What is the 90% confidence interval estimate of the difference between two population means.
Given that this sample is extremely large, can the responses be considered to be representative of the population of the United States? Explain.
There is one Grand Prize of $500, one First Prize of $100, and 8 Second Prizes of $50. Find the expected winnings per ticket sold.
find probabilty that the average of those counts is more than 83.0 mosquitoes per square meter. Assume the variable is normally distributed.
What is the probability that a shopper will spend more than 25 minutes in a store? If 200 shoppers enter a store, how many shoppers would you expect to stay in the store for more than 25 minutes?
Revenue and cost functions for producing and selling quantity x for certain production facility are given below. Find out profit function P(x).
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