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You randomly select 20 supermarkets and measure the temperature of their coolers. The sample mean temperature is 43.0F with a sample standard deviation of 2.0F. Find the 95% confidence interval for the mean temperature. Assume the temperatures are approximately normally distributed.
Determine the probability that at least 4 of the 155 golfers would get a hole in one on the sixth hole. Discuss
What sampling method did you use? Construct a 95% confidence interval for the true population proportion of the SUV's. What sample size would be needed to ensure an error of +/- 0.025 with 95% confidence?
The mileage per day is distributed normally. Find the probablitly that a truck drives at least 133 miles in a day. Round your answer to 4 decimal places.
question refer to the article entitled 21st birthday from the penn state pulse january 2001. located in the library
Men are usually the snow blower accident victims. There are several factors to consider, but we're going to choose the level of operating experience between men ages 21-35.
question a recent american medical association survey of 785 randomly selected university graduates found that 144 of
the average age of vehicles registered in the united states is 96 months. assume the population is normally
attempting to analyze the relationship between advertising and sales the owner of a furniture store recorded the
How large a sample must be selected if the company wants to be 85% confident that the true mean differs from the sample mean by no more than 1 day?
What is the formula for the exclusive range?
question a study is conducted to determine if time of day has any effect on test grades. an introductory psychology
Solve the following problem for distribution with a mean 80 and standard deviation of 10. Find out at least what percentage of values will fall between 60 and 100.
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