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A sample of 30 cookies is taken to test the claim that each cookie contains an average of at least 9 chocolate chips. The average number of chocolate chips per cookie in the sample was 7.8 with a sample standard deviation of 3. Using a 5% level of significance, perform the hypothesis test using the critical value approach. Show all parts of the test, including hypotheses, test statistic, decision rule, decision and conclusion.
What does this data tell us by itself before we do anything with it such as doing hypothesis testing or comparing it to other data? How can this be used by the M&M company?
How many students would you include in a random sample to determine with 95% probability and to within 5% of the true value the proportion who arrive at 9am lectures without breakfast?
in a large population the percentages of males and females are both 50 while 15 are left-handed with the remaining 85
r. Patton is a professor of English. Recently she counted the number of misspelled words in a group of student essays. She noted the distribution of misspelled words per essay followed the normal distribution with a standard deviation of 2.44 word..
the mean score on a physical fitness test for division i student-athletes is 947 with a standard deviation of 205. if
a selection of cereals was sampled and the number of calories was plotted against the number of grams of protein with
following are some descriptions of sampling procedures. classify the type of sampling as probability or
a researcher conducts a study of perceptual illusions under two different lighting conditions. twenty participants were
A sample of n = 5 scores has a mean of M = 12. If one person with a score of X = 8 is removed from the sample, what will be the value of the new mean?
five students performed a kjeldahl nitrogen analysis of a protein sample. the following weight nitrogen values were
A University of Omaha is concerned that out of state students may be receiving lower grades than in state students. Two independent random samples have been selected: 165 observations from population 1 (Out of state students) and 177 from population ..
What is the expected total weight of 100 randomly chosen babies? What is the standard deviation of the total weight of 100 randomly chosen babies?
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