The sodium content of a popular sports drink is listed as 220 mg in a 32-oz bottle. Analysis of 10 bottles indicates a sample mean of 228.2 mg with a sample standard deviation of 18.2 mg. (a) State the hypotheses for a two-tailed test of the claimed sodium content. H0: μ ≥ 220 vs. H1: μ < 220 H0: μ ≤ 220 vs. H1: μ > 220 H0: μ = 220 vs. H1: μ ≠ 220    a b c  (b) Calculate the t test statistic to test the manufacturer’s claim. (Round your answer to 4 decimal places.) Test statistic             (c) At the 5 percent level of significance (α = .05), does the sample contradict the manufacturer’s claim?   (Click to select)   Do not reject   Reject  H0. The sample   (Click to select)   contradicts   does not contradict  the manufacturer’s claim. (d-1) Use Excel to find the p-value and compare it to the level of significance. (Round your answer to 4 decimal places.) The p-value is  . It is   (Click to select)   greater   lower  than the significance level of .05. (d-2) Did you come to the same conclusion as you did in part (c)?  Yes No

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The sodium content of a popular sports drink is listed as 220 mg in a 32-oz bottle. Analysis of 10 bottles indicates a sample mean of 228.2 mg with a sample standard deviation of 18.2 mg.
 
(a) State the hypotheses for a two-tailed test of the claimed sodium content.

  1. H0μ ≥ 220 vs. H1μ < 220
  2. H0μ ≤ 220 vs. H1μ > 220
  3. H0μ = 220 vs. H1μ ≠ 220 

 

  • a
  • b
  • c


 
(b) Calculate the t test statistic to test the manufacturer’s claim. (Round your answer to 4 decimal places.)
 

Test statistic            
 
(c) At the 5 percent level of significance (α = .05), does the sample contradict the manufacturer’s claim?
 
  (Click to select)   Do not reject   Reject  H0. The sample   (Click to select)   contradicts   does not contradict  the manufacturer’s claim.
 
(d-1) Use Excel to find the p-value and compare it to the level of significance. (Round your answer to 4 decimal places.)
 
The p-value is  . It is   (Click to select)   greater   lower  than the significance level of .05.
 
(d-2) Did you come to the same conclusion as you did in part (c)?
 

  • Yes
  • No

 

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