# If a researcher does not reject a true null

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Question 25If a researcher does not reject a true null hypothesis, she has made aNo ________ decision.Correct or Incorrect?
Select one:IncorrectCorrectQuestion 26A food processor packages orange juice in small jars. The weights of the filled jars are approximately normally distributed with a mean of 10.5 ounces and a standard deviation of 0.3 ounce. Find the proportion of all jars packaged by this process that have weights that fall below 10.875 ounces. Answer as a decimal to three places.Answer:Question 27You have created a 95% confidence interval for μ with the result 10 ≤ μ ≤ 15. What decision will you make if you test : μ = 16 versus : μ ≠ 16 at α = 0.05?
Question 28) A ________ is a numerical quantity computed from the data of a sample and is used in reaching a decision on whether or not to reject the null hypothesis.
Question 29The owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the club. She would now like to determine whether or not the mean age of her customers is greater than 30. If so,she plans to alter the entertainment to appeal to an older crowd. If not, no entertainment changes will be made. Suppose she found that the sample mean was 30.45 years and the sample standard deviation was 5 years. What is the p-value associated with the test statistic? Hint: use t.dist.rt. Answer as a decimalto three places.
Answer:Question 30The amount of tea leaves in a can from a particular production line is normally distributed with μ = 110 grams and σ = 25 grams. What is the probability that a randomly selected can will contain less than 100 grams of tea leaves? Answer as a decimal to four places.
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