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During each summer, many families spent part of their vacation time at a beach along the East or West Coast. Due to the popularity of movies like Jaws, and recent shark attacks at US beaches, Americans have become increasingly concerned about water activities. Research suggests that 70% of all Americans believe that sharks are dangerous (Source: National Aquarium in Baltimore). One thousand Americans were selected, and each was asked whether they believed shark attacks are dangerous.
a) What is the population of interest?
b) What is the sample?
c) Describe the variable of interest.
A recent study of minimum wage earners found that 51.3% of them are 16 to 24. suppose a sample of 600 minimum wage earners is selected. is it appropriate to use the normal approximation to the binomial distribution.
How many treatments are there? What is the total sample size? Is there a significant difference at the 5% Level of significance?
Compute the p-value; and at 95% confidence, test the hypothesis. Assume the population is normally distributed. Compute the test statistic.
Listed below is the selling price for a share of Coca Cola, at the close of the year. Determine the least squares trend equation.
Can we conclude that more than 60% of retired people in the age group would return to work? I need to do a Hypothesis Testing using only P value format (Explain in everyday words but also have the formal steps show with results) on this problem.
A college is considering making the purchase of a laptop computer a requirement for some of its programs. In the past, only 20% of students owned laptop computers. A random sample of 300 students revealed that 77 of them had laptop computers
question listed below is the net sales in million for home depot inc. and its subsidiaries from 1993 to 2004.yearnet
Write down the advantages and disadvantages of using computer software for decision making.
If the 95% confidence interval for the mean of a variable of interest obtained from a sample for values contains a hypothesized value, µ1, of the mean.
Write the claim mathematically and identify H0 and Ha (b)Find the critical value(s) and identify the rejection region(s). (c) Find the standardized test statistic.
When using the normal distribution (empirical rule) to obtain the bounds for 99.73 percent of the value in a population, the interval generally will be ______the interval obtained for the same percentage if Chebyshev's theorem is assumed., shorter..
Identify the space of results of an observation of 2 consecutive minutes and identify the probability of certain line be free if in the last minute was free.
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