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1. What does it mean? part 1. Respond to the following questions:
a) A casino claims that its roulette wheel is truly random. What should that claim mean?
b) A reporter on Market Place says that there is a 50% chance that the Federal Reserve Bank will cut interest rates by a quarter point at their next meeting. What is the mean- ing of such a phrase?
2. What does it mean? part 2. Respond to the following questions:
a) After an unusually dry autumn, a radio announcer is heard to say, "Watch out! We'll pay for these sunny days later on this winter." Explain what he's trying to say, and comment on the validity of his reasoning.
b) A batter who had failed to get a hit in seven consecutive times at bat then hits a game-winning home run. When talking to reporters afterward, he says he was very confident that last time at bat because he knew he was "due for a hit." Comment on his reasoning.
an internal study by the technology services department at lahey electronics revealed company employees receive an
Given that 8 is the outcome on the first roll, find the probability that the bettor now rolls the point 8 before rolling a 7 and thus wins. Note that at this stage in the game the only outcomes of interest are 7 and 8. Thus find P(8 | 7 or 8).
Interpret values of b1, b2, b3 and b4 in this estimated regression equation.
Create the 95% confidence interval about mean value of y, number of days absent, given x = 95 degrees, and = 0.449x - 30.27
A simple random sample of 64 observations was taken from a large population. The sample mean and the standard deviation were determined to be 320 and 120 respectively. The standard error of the mean is?
a study is conducted to compare mean cholesterol levels for individuals following a low carbohydrate diet for at least
Develop a scatter plot of the data with the dependent variable, download time, on the vertical axis and the independent variable, size, on the horizontal axis. Does there appear to be a relationship between the two variables? Is the relationship l..
A doctor wants to estimate the HDL. How many subjects are needed to estimate the HDL within 3 points with a 99% confidence. Assuming s=13.9
Given that a person uses five or more prescriptions, determine the probability that the person is age 65 or older.
a telephone company claims that 90 percent of the time when customers call for directory assistance the customer is
There is not enough information to answer the question, the formula requires knowing the population standard deviation for Mark and Debbie, and we were not given this information.
State the hypotheses for a right-tailed test. Obtain a test statistic and p-value assuming unequal variances. Why might the sample data not follow a normal, bell-shaped curve? If not, how might this affect your conclusions?
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