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A tv weat man reports a 35% chance of rain today. What is the probability that it will not rain today? Explain.
A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 925 hours. A random sample of 39 light bulbs has a mean life of 905 hours with a standard deviation o 55 hours.
A large electronics company wants to estimate the proportion of all households that own GPS machines. What sample size is required that would give the maximum error of 2.0% for a 95% confidence interval? An unscientific survey had a result of 30%.
64% of the workers at Motor Works are female, while 66% of the workers at City Bank are female. If one of there companies is selected at random (assume a 50-50 chance for each), and then a worker is selected at random, what is the probability that..
an avalanche is a major danger facing skiers snowboarders and snowmobilers. the number of avalanche fatalities per year
This question related to Basic Statistics and it discuss about the most effective and powerful methods in qualitative research. This has been answered in the solution
Selecting a European Distribution Center Site for American International Automotive Industries
State the critical values for testing and what is the probability that this decision strategy will result in a Type I error?
Taking care to control for weather conditions and other variables as much as possible. Define the null hypothesis.
Decrease your sales price by $5 in order to increase sales by 5,000 units. Which of the above alternatives would your choose to increase profits?
A nectarine-packing firm claims that the nectarines they ship have a mean weight of 5.22 ounces. A test on n = 10 randomly selected nectarines, gave the following results, in ounces:
traditionally the average price of homes sold in a medium size city in canada was 220000. a random sample of 81 homes
in an experiment on mosquito insecticide it is found that 80 are killed during the initial application but those that
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