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An apple juice producer buys all his apples from a conglomerate of apple growers in one northwest state. The amount of juice squeezed from each of these apples is approximately normally distributed with a mean of 2.25 ounces and a standard deviation of 0.15 ounce. 77% of the apples will contain at least how many ounces of juice?
A real estate company wants to study the relationship between house sales prices and some important predictors of sales prices. Based on data from recently sold homes in the area, the variables
A state education agency designs and administers high school proficiency exams. Historically, time to complete the exam was an average of 120 minutes.
Botanist is testing three plants and finds that prob of plant A being alive in a weak is 0.3 plant B is 0.6 and plant C 0.5 these probability are indipendant of each other. Determine the probability of all plants being alive after a weak.
Pollsters just report the results of hypothesis tests that show statistical significance but not those in which there was insufficient evidence.
Temperature is used to measure the output of a production process.When the process is in control, the mean of the process is = 128.5. Construct the x chart for this process if samples of size 6 are to be used.
The hypotheses tested by the one-way ANOVA F test - Evaluate the P-value of the ANOVA F test
Would you agree with this claim if the random sample showed an average of 23,500 km and a standard deviation of 3,900 km? Use 0.01 level of significance.
In a specific company, there are three levels of workers: skilled, unskilled, and manager. The owner of this company wants to know if the level of job satisfaction differs amongst the three levels of workers.
Solar cells are attached to a panel with a new heat resistant adhesive. The adhesive must provide 2.80 pounds of force in order to hold the cell on the panel. A random sample of 50 cells is tested and the following forces are necessary to break th..
A campus researcher wanted to investigate the factors that affect visitor travel time in a complex. multilevel building on campus.
A driver hired at the beginning of a year can be used to meet the current year's requirements and is paid full salary for the current year.
An insurance company states that 90% of its claims are settled within 5 weeks. A consumer group selected a random sample of 100 of the company's claims and found 75 of the claims were settled within 5 weeks.
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