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sesenic [268]
3 years ago
12

Past experience indicates that the time re- quired for high school seniors to complete a standard- ized test is a normal random

variable with a standard deviation of 6 minutes. test the hypothesis that σ = 6 against the alternative that σ < 6 if a random sample of the test times of 20 high school seniors has a standard deviation s = 4.51. use a 0.05 level of significance.
Mathematics
1 answer:
seropon [69]3 years ago
6 0
With a standard deviation of 6 minutes, we will test the hypothesis that σ = 6 against the alternative that σ < 6 if a random sample of the test times of 20 high school seniors has a standard deviation s = 4.51. use a 0.05 level of significance. <span /><span><span>
</span></span>
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