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Movie theater complex will raise its ticket price if average ticket price of theaters in southern california exceeds $7.50. Random sample of 36 theaters resulted in mean of $7.80. Population standard deviation is $1.00. Determine conclusion can be made at 10% significance level? How about 5% significance level?
Identify the point estimate of the average number of available hotel rooms in this lesson from each sample. Construct and Interpret a 95% confidence level for the true mean number of available hotel rooms, based on the point estimate of each sampl..
Which is the probability that the median of the sample is between $17 and $20?
If a technical breakthrough occurred that raised the profit per unit of X 1 to $3, would this affect the optimal solution?
Due to financial hardship, the Nyke shoe company feels they only need to make one size of shoes, regardless of gender or height. They have collected data on gender, shoe size, and height
How do we use a least squares regression line? What is the range for the coefficient of determination?
Is there a significant difference in the average prices for these two different supermarket chains? Test at α = 0.05
The number customers who enter a supermarket each hour is normally distributed with a mean of 600 and a standard deviation of 200. The supermarket is open 16 hours per day.
Adriana Corporation manufactures football equipment. In planning for next year, the managers want to understand the relation between activity and overhead costs.
Determine following probabilities where Z follows standard Normal distribution?
The population of lengths of aluminium coated steel sheets is normally distributed with a mean of 30.05 inches and a standard deviation of 0.20 inches. A sample of four metal sheets is randomly selected from a batch. What is the possibility that t..
Using the following number of flirtations actions in the 4 hour period, test the "null hypothesis'
Would it be appropriate to say the coefficient of determination (R-squared) is the proportion of variation in Y due to the variation within each of the categories of X?
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