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A samplemean, samplesize, and sample standard deviation are provided below. Use theone-mean t-test to perform the required hypothesis test at the 1% significance level. x=14,

A samplemean, samplesize, and sample standard deviation are provided below. Use theone-mean t-test to perform the required hypothesis test at the 1% significance level.

x=14, s=7, n=15, H0: =20, Ha: <20

The test statistic is t= ?

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