Question

In: Statistics and Probability

A biologist claims that a specific type of hamsters live for longer than, or equal to,...

A biologist claims that a specific type of hamsters live for longer than, or equal to, 5 years on average. From 2000 hamsters that she has in her lab, she selects a random sample of 50 hamsters for testing and recorded that they lived for 4.9 years on average.

Based published papers in the field, she knows that the standard deviation of the lifespan of this type of hamsters is 1/3 years. Help the biologist to conduct a hypothesis test at the significance level of 0.05.

1: Write down the claim in mathematical notations.

2. State the null and alternative hypotheses

3: Choose and list the level of significance

4: Specify the sample size and sample statistic distribution

5. Is this a two-tail test or a one-tail test? Display the null distribution for yourself.

7: Calculate both the test statistic AND p-value

8: Clearly express your conclusion in words

Solutions

Expert Solution

please rate my answer and ask doubts in the comment section.

orchestra answered 1 year ago
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