Question 377584
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Hi
2)
Ho: sodium = 1190
Ha: sodium < 1190
*Note: Test statistic = {{{z =blue (x - mu)/blue(sigma/sqrt(n))}}}
Test statistic = {{{z =blue (1167.34 - 1190)/blue(252.94/sqrt(200))}}}

z = -22.66 /17.8856 = -1.26  NORMSDIST(-1.26)= .1038 > .05
evidence is not sufficient enough to reject the null hypothesis at a significance level of 0.01