Mathematics, 12.12.2019 01:31 tfraz4412
In pennsylvania, the average iq score is 101.5. the variable is normally distributed and the population standard deviation is 15. a school superintendent claims that the students in her school district have an iq higher than the average of 101.5. she selects a random sample of 30 students and finds the mean of the test scores is 106.4.
test the claim at α = 0.05
1. state the hypotheses and identify the claim. h0: μ=101.5h1: μ> 101.5this is the claim, and this indicates a right-tailed test
2. find the critical value. for a right-tailed test with α = 0.05, the z-value is +1.65.
3. compute the test statistic.
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