"Trydint" bubble-gum company claims that 7 out of 10 people prefer their gum to "Eklypse". Test their claim at the 90 confidence level. The null and alternative hypothesis in symbols would be:...


"Trydint" bubble-gum company claims that 7 out of 10 people prefer their gum to "Eklypse". Test their claim at the 90 confidence level.


The null and alternative hypothesis in symbols would be:




  • H0:μ≥0.7H0:μ≥0.7
    H1:μ<><>

  • H0:p≤0.7H0:p≤0.7
    H1:p>0.7H1:p>0.7

  • H0:μ=0.7H0:μ=0.7
    H1:μ≠0.7H1:μ≠0.7

  • H0:p=0.7H0:p=0.7
    H1:p≠0.7H1:p≠0.7

  • H0:μ≤0.7H0:μ≤0.7
    H1:μ>0.7H1:μ>0.7

  • H0:p≥0.7H0:p≥0.7
    H1:p<><>











The null hypothesis in words would be:





  • The proportion of people in a sample that prefer Trydint gum is not 0.7

  • The proportion of all people that prefer Trydint gum is 0.7

  • The proportion of people in a sample that prefers Trydint gum is 0.7.

  • The proportion of all people that prefer Trydint gum is greater than 0.7.

  • The average of people that prefer Trydint gum is 0.7.

  • The average of people that prefer Trydint gum is not 0.7.

  • The proportion of all people that prefer Trydint gum is less than 0.7.











Based on a sample of 200 people, 112 said they prefer "Trydint" gum to "Eklypse".


The point estimate is:  (to 3 decimals)


The 90 % confidence interval is:  to  (to 3 decimals)


Based on this we:




  • Fail to reject the null hypothesis

  • Reject the null hypothesis




Jun 01, 2022
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