Chapter 11: Q.79 (page 661)
Read the statement and decide whether it is true or false:
In a goodness-of-fit test, the expected values are the values we would expect if the null hypothesis were true.
Short Answer
The statement is true.
Chapter 11: Q.79 (page 661)
Read the statement and decide whether it is true or false:
In a goodness-of-fit test, the expected values are the values we would expect if the null hypothesis were true.
The statement is true.
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Get started for freeDetermine the appropriate test to be used in the next three exercises.
An archeologist is calculating the distribution of the frequency of the number of artifacts she finds in a dig site. Based on
previous digs, the archeologist creates an expected distribution broken down by grid sections in the dig site. Once the site has been fully excavated, she compares the actual number of artifacts found in each grid section to see if her expectation was accurate.
Teachers want to know which night each week their students are doing most of their homework. Most teachers think that students do homework equally throughout the week. Suppose a random sample of 56 students were asked on which night of the week they did the most homework. The results were distributed as in Table 11.8.
From the population of students, do the nights for the highest number of students doing the majority of their homework occur with equal frequencies during a week? What type of hypothesis test should you use?
A teacher predict that the distribution of grades on the final exam will be and they are recorded in table 11.27
The actual distribution for a class of 20 is in table 11.28
A factory manager needs to understand how many products are defective versus how many are produced. The number of expected defects is listed in Table 11.5.
A random sample was taken to determine the actual number of defects. Table 11.6 shows the results of the survey.
State the null and alternative hypotheses needed to conduct a goodness-of-fit test, and state the degrees of freedom.
How many passengers are expected to travel between and miles and purchase first-class tickets?
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