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Q1) Assume you have the following data: H1: µ ? 200, S =30, n = 64, and X =218. Conduct a two tailed hypothesis test at the 0.05 significance level.
Q2) If these data in question 8 had been generated with a sample of 25 (n =25), what statistical test would be appropriate?
Q3) Determine a hypothesis that the following data may address and perform a test on the survey data.
a.) American Idol should be broadcast before 9pm: Agree = 40, Neutral = 35, Disagree= 25, total = 100.
b.) Political affiliations of a group indicate: Republicans = 102, Democrats = 98, Total = 200.
use the degree of confidence and sample data to constuct a confidence interval for the population proportion p.of 139
If university officials say that at least 70% of the voting student population supporting the fee increase, what conclusion can be drawn based on a 95% level of confidence?
question an outbreak of food-borne illness was attributed to salmonella. epidemiologists determined that the outbreak
If a time series is stationary without a linear trend or the seasonal component, which of the following forecasting methods may be suitable.
Explain why one would expect to find a positive correlation between the number of fire engines that respond to a fire and the amount of damage done in the fire. Does this mean that the damage would be less extensive if fewer fire engines were disp..
What is the probability that at least one of the new books is a commercial success?
What are various non-parametric tests utilized in business decision making? Give an example of each test with an appropriate business situation.
On a recent prostate cancer screening test, Dale received positive results. It is known that this typescreening test will show 99% positive for people who have cancer
Suppose that 40% of participants consume caffeine and smoke. If 8 participants are evaluated, what is the probability that: Exactly half of them consume caffeine and smoke?
Suppose that a certain college class contains 54 students. Of these, 34 are sophomores, 35 are psychology majors, and 7 are neither. A student is selected at random from the class.
Graph one shows a number of observations that are very spread out but generally trending from the top left of the graph to the bottom right.
Run a regression of Y on X in Excel and turn in the output with a note explaining what the coefficients {correlation coefficient (multiple R), standard error, t-statistic and F-statistic} mean.
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