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Question: A randomized experiment was done in which overweight men were randomly assigned to either exercise or go on a diet for a year. At the end of the study there was a statistically significant difference in average weight loss for the two groups. What additional information would you need in order to determine if the difference in average weight loss had practical importance?
Of the remaining students, most scored in the 705-79% range. However, a few students scored below 60%. What would be the distribution of scores in this situation?
Raj's Razors Manufacturing Company has four production facilities. The table below gives the coordinates and number of weekly shipments for each plant.
Your goal is to form a 95% confidence interval for the proportion of times green occurs with a margin of error no bigger than 0.005. How many spins do you plan to observe? Write a brief summary explaining your calculations.
For n=25 make up three values of that would be considered typical for a sample from this population. Make up three data points that would be considered typical from this population.
1. Let be the binary repetition code with parameter [n, k] = [12, 4]. a) Give a generator matrix for that is in standard form. What does standard form means?
Does this provide evidence that the company has reached its goal? Using your confidence interval, test an appropriate hypothesis and state your conclusion.
If Stocks 1 and 2 have expected returns of 9 percent and 10 percent per year, respectively, then what is the minimum expected annual return for Stock 3 that will enable Glenda to achieve her investment requirement?
A researcher studies the relationship between political attitudes and income. He/she finds that those with higher income are more conservative.
Do the data indicate that the lengths of one supplier's 2x4's are subject to more variability than those of the other supplier? Assume α = 0.05. (HINT: F Test for Differences in Two Variances)
the weight of food packed in certain containers is a random variable with a mean of 16 oz. and a standard deviation of
If the respondents answer truthfully, what is P(0.52 ≤P^≤ 0.60)? This is the probability that the statistic P^ estimates the parameter 0.56 within plus or minus 0.04.
What is the probability that Player I (given his information) describes to the event A?- What is the probability that Player II describes to the event A?
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