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A recent study found that 40% of the people in a certain city take public transportation at least once per week. We suspect that the real percentage is less than this. We ask 75 people if they use public transportation weekly and 24 say 'no'. We'd like to know if this is sufficient evidence to suggest that the real percentage of people who take public transportation is less than what was reported. Find the p-value.
Suppose that traffic accidents occur in a certain region according to a Poisson process with rate λ = 2 per day. Suppose also that the number M of persons involved in a given accident has a geometric distribution with parameterp = 1/2. That is,
A coin is tossed 100 times. The difference "number of heads - number of tails" is like the sum of 100 draws from one of the following boxes. which one, and why?
What is the probability that Alice is idle because neither PC is operational?
the 70-year long-term record for weather shows that for new york state the annual precipitation has a mean of 39.06
The current values of the stock portfolios for 80 clients of an investment counselor are as listed in data file XR02017. Use your computer statistical software to generate a frequency distribution and histogram describ- ing this information. Do a..
Assess the adequacy of JBH's dividend cover where; dividend cover is 1.2 times.
Interpret the following computer cross-tab output including a X2 test. Interpret the computer cross-tab output, including a Chi-square test.
a shipment of 20 cameras include 3 that are defectivegt what is the minimum number of cameras that must be selected
Do you think an F-ratio of 1 would lead you to conclude that there is no treatment effect? Why? Justify your answers with examples.
Find the standard deviation of the sampling distribution of the proportions?
Describe the relationship between Total Mortgages and Interest Rate.- If we standardized both variables, what would the correlation coefficient between the standardized variables be?
Is there any evidence this group of students has a mean caloric intake below the daily energy requirement? Use a = 0.05.
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