
"Trydint" bubble-gum company claims that \( 7 \) out of \( 10 \) people prefer their gum to "Eklypse" and they want to test if this value is different.
The null and alternative hypotheses in symbols would be:
A. \(H _ { 0 } : p = 0 . 7\)
\( H _ { 1 } : p > 0.7\)
B. \(H _ { 0 } : \mu = 0.7 \)
\( H _ { 1 } : \mu < 0.7\)
C. \(H _ { 0 } : p = 0.7 \)
\( H _ { 1 } : p < 0.7\)
D. \(H _ { 10} : \mu = 0.7 \)
\( H _ { 1 } : \mu \neq 0.7\)
E. \(H _ { 0 } : p = 0.7 \)
\( H _ { 1 } : p \neq 0.7\)
F. \(H _ { 0 } : \mu = 0.7 \)
\( H _ { 1 } : \mu > 0.7\)
The null hypothesis in words would be:
A. The proportion of all people that prefer Trydint gum is less than \( 0.7 \) .
B. The proportion of all people that prefer Trydint gum is greater than \( 0.7 .\)
C. The proportion of people in a sample that prefer Trydint gum is not \( 0.7\)
D. The average of people that prefer Trydint gum is not \( 0.7 .\)
E. The proportion of people in a sample that prefers Trydint gum is \( 0.7 .\)
F. The proportion of all people that prefer Trydint gum is \( 0.7\)
H. The average of people that prefer Irydint gum is \( 0.7 \) .
Based on a sample of \( 380 \) people, \( 245 \) said they prefier "Trydint" gum to "Eklypse".
The point estimate is: _____
The \( 95 \% \) confidence interval is: ______ to ______
Based on this we:
A. Reject the null hypothesis
B. Fail to reject the null hypothesis