A recent report claimed that 13% of students typically walk to school.8 DeAnna thinks that the proportion is higher than 0.13 at
her large elementary school. She surveys a random sample of 100 students and finds that 17 typically walk to school. DeAnna would like to carry out a test at the α = 0.05 significance level of H0: p = 0.13 versus Ha: p > 0.13, where p = the proportion of all students at her elementary school who typically walk to school.
1 answer:
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Answer:
10 teeth must go on the driven gear
Step-by-step explanation:
Let the number of teeth be x
In order for the new product to maintain the same ratio as the old the ratio must remain the same. This means that
17:5 = 34:x
∴ 10 teeth must go on the driven gear
hence ratio = 34:10