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A new industrial oven has just been installed at the Piatt Bakery. To develop experience regarding the oven temperature, an inspector reads the temperature at four different places inside the oven each half hour. The first reading, taken at 8:00 a.m., was 340 degrees Fahrenheit. (Only the last two digits are given in the following table to make computations easier.)Reading
Time 1 2 3 4
8:00 a.m. 40 50 55 39
8:30 a.m. 44 42 38 38
9:00 a.m. 41 45 47 43
9:30 a.m. 39 39 41 41
10:00 a.m. 37 42 46 41
10:30 a.m. 39 40 39 40
a. On the basis of this initial experience, determine the control limits for the range. Plot the experience on a chart.
b. Does there seem to be a time when there is too much variation in the temperature?
Suppose the least squares regression equation is Y' = 1,202 + 1,133X. When X = 3, what does Y' equal?
At.05 level of significance, is there sufficient evidence to conclude that difference exists between proportion of cats and proportion of dogs which sleep more than 10 hours per day?
After the presidential debates, a random sample of 1200 voters showed that 540 favored the Democratic candidate; 480 were in favor of the Republican candidate; 40 were in favor of the Independent candidate, and 140 were undecided. At a 1% level of..
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Create Frequency Distribution of Sample Mean. Compute and Identifies Sampling Distribution of Sample Mean.
There is a statistical deception here. Explain what is deceptive about the bar graph.
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At.05 level of significance, is there evidence to propose that mean life length of batteries produced by this manufacturer is more than 400 hours?
Not take SRS of 25 students who took test. What are the mean and standard deviation of sample mean score xbar of these 25 students?
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A box contains 9 tickets numbered 1 to 9 inclusive. If 3 tickets are drawn from a box one at a time, find the probability that they are alternative after (1) odd, even, odd or (2) even, odd, even.
In Excel, which of the following functions is used to conduct a hypothesis test (using the p -value) for a population variance
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