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Table Tools Ink Tools osoft Word Mailings ReviewView Design Layout Pens : . | 3:L .11NorrnalI'No Spaci Heading 1 Heading 2 Paragraph Title ·A- Styles There are 92 public colleges and universities in Canada The average tuition in 2016-17 for all ofthe colleges and for this sample s $6879 with a standard deviation of $568. What type oftest should youuse to test this hypothesis? universities was $6392 per year (2 semesters). You believe that the tuition has increased significantly for the 2017- le the published tuition rates for 12 schools across Canada You find the mean tuition rate 18 school year. You sampl C a single sample t-test C az-test C a dependent samplest-test C an ndependent samplest-test Researchers were interested in the effects oflead consumption through contaminated water in Flint, MI orn intelligence in children. They sampled 25 children at the local elementary school and gave them the full-scale Wechsler Intelligence Scale for Children (WISC). In a typically developing population in the United States, the WISC has a mean of 100 and a standard deviation of 15. The researchers believed that the lead consumption that hadbeen on-going since the water source was changed in 2014 would lead to decreased intelligence test scores for the children in Flint. When they averaged the WISC scores for the 25 children in Flint who were tested, they found a mean 1Q of93.5. What type of test should they use to test this hypothesis? r a sangle sample t-test c anindependent samplest-test n a dependent samplest-test a z-testExplanation / Answer
1) Since we have one population and sample size is small and the standard deviation of population is not given so we have to use a single sample t tests.
First option is correct
2) Since population standard deviation is given and sample size is also >15,
So z test will be appropriate
4th option is correct
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