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A brand of powdered milk is adverstised as having a net weight of 250 grams. A curious consumer obtained the net weight of 10 randomly selected cans. The values obtained are: 256, 248, 242, 245, 246, 248, 250, 255, 243, and 249 grams. Is there reason to believe that the average net weight of the powdered milk cans is less than 250 grams at 10% level of significance? Assume the net weight is normally distributed with unknown population variance.
1. How will you state the Ho and Ha?
2. What is the value of a?
3. What is the test statistic? State the formula.
4. State the decision rule.
5. Perform a test of hypothesis and interpret.
Because Mike and Ikes are your favorite candy, you decided to apply statistics to them. Assume your bag of Mike and Ikes is a simple random sample.
What is a hypothesis? What is the distinction between a hypothesis and a prediction?- What information does the researcher communicate in each of the sections of a research article?
a random sample of 45 door-to-door encyclopedia salespersons were asked how long on average they were able to talk to
Test the null hypothesis of no association, with attention to the natural ordering of the columns. State clearly your alternative hypothesis and choice of test size.
if a simple pearson correlation value .685 what percentage of variance is accounted for?a. 69b. 35c. 47d.
Write the probability distribution of x. Enter the exact answers. Enter your answers for x in increasing order.
Population standard deviation is known to be 8 grams. Determine and interpret p-value for testing that mean weight of Take-a-Bite is less than 175 grams.
At 95% confidence using the p- value approach, test the hypotheses. Let α = 0.1.
a. List the possible samples without replacement of size 3 that can be obtained from the population of five officials.
Calculate (rounded to the nearest tenth) The correlation between IQ and Anxiety r =??
Is a permutation test valid? Suppose that a professor wants to compare the effectiveness of two different instruction methods.
you are investigating the role of physical activity in heart disease and suggest that physical activity protects
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