Question

"Trydint" bubble-gum company claims that 8 out of 10 people
prefer their gum to "Eklypse". Test their claim at the 99
confidence level.

The null and alternative hypothesis in symbols would be:

- H0:p≤0.8H0:p≤0.8

H1:p>0.8H1:p>0.8 - H0:μ≤0.8H0:μ≤0.8

H1:μ>0.8H1:μ>0.8 - H0:μ=0.8H0:μ=0.8

H1:μ≠0.8H1:μ≠0.8 - H0:p=0.8H0:p=0.8

H1:p≠0.8H1:p≠0.8 - H0:μ≥0.8H0:μ≥0.8

H1:μ<0.8H1:μ<0.8 - H0:p≥0.8H0:p≥0.8

H1:p<0.8H1:p<0.8

The null hypothesis in words would be:

- The proportion of people in a sample that prefer Trydint gum is not 0.8
- The proportion of people in a sample that prefers Trydint gum is 0.8.
- The proportion of all people that prefer Trydint gum is greater than 0.8.
- The proportion of all people that prefer Trydint gum is 0.8
- The proportion of all people that prefer Trydint gum is less than 0.8.
- The average of people that prefer Trydint gum is not 0.8.
- The average of people that prefer Trydint gum is 0.8.

Based on a sample of 120 people, 79 said they prefer "Trydint" gum
to "Eklypse".

The point estimate is: (to 3 decimals)

The 99 % confidence interval is: to (to 3
decimals)

Based on this we:

- Reject the null hypothesis
- Fail to reject the null hypothesis

Answer #1

"Trydint" bubble-gum company claims that 8 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:p≥0.8 H1:p<0.8
H0:p=0.8 H1:p≠0.8
H0:μ=0.8 H1:μ≠0.8
H0:μ≤0.8 H1:μ>0.8
H0:μ≥0.8 H1:μ<0.8
H0:p≤0.8 H1:p>0.8
The null hypothesis in words would be:
The proportion of all people that prefer Trydint gum is
0.8
The average of people that prefer Trydint gum is 0.8.
The proportion of people in a sample that prefer...

"Trydint" bubble-gum company claims that 6 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=0.6 H1:μ≠0.6
H0:p≥0.6 H1:p<0.6
H0:μ≤0.6 H1:μ>0.6
H0:μ≥0.6 H1:μ<0.6
H0:p=0.6 H1:p≠0.6
H0:p≤0.6 H1:p>0.6
The null hypothesis in words would be:
The proportion of all people that prefer Trydint gum is
0.6
The proportion of all people that prefer Trydint gum is less
than 0.6.
The average of people that prefer...

"Trydint" bubble-gum company claims that 8 out of 10 people
prefer their gum to "Eklypse". Test their claim at the 95
confidence level. The null and alternative hypothesis in symbols
would be: H 0 : μ ≤ 0.8 H 1 : μ > 0.8 H 0 : p ≤ 0.8 H 1 : p >
0.8 H 0 : μ = 0.8 H 1 : μ ≠ 0.8 H 0 : p ≥ 0.8 H 1 : p < 0.8...

Test the claim that the proportion of people who own cats is
smaller than 80% at the 0.005 significance level.
The null and alternative hypothesis would be:
H0:μ=0.8H0:μ=0.8
H1:μ≠0.8H1:μ≠0.8
H0:μ=0.8H0:μ=0.8
H1:μ<0.8H1:μ<0.8
H0:μ=0.8H0:μ=0.8
H1:μ>0.8H1:μ>0.8
H0:p=0.8H0:p=0.8
H1:p≠0.8H1:p≠0.8
H0:p=0.8H0:p=0.8
H1:p>0.8H1:p>0.8
H0:p=0.8H0:p=0.8
H1:p<0.8H1:p<0.8
The test is:
right-tailed
left-tailed
two-tailed
Based on a sample of 200 people, 73% owned cats
The p-value is: (to 2 decimals)
Based on this we:
Fail to reject the null hypothesis
Reject the null hypothesis

Test the claim that the proportion of people who own cats is
significantly different than 80% at the 0.2 significance
level.
The null and alternative hypothesis would be:
H0:p=0.8H0:p=0.8
Ha:p≠0.8Ha:p≠0.8
H0:μ≤0.8H0:μ≤0.8
Ha:μ>0.8Ha:μ>0.8
H0:μ=0.8H0:μ=0.8
Ha:μ≠0.8Ha:μ≠0.8
H0:p≥0.8H0:p≥0.8
Ha:p<0.8Ha:p<0.8
H0:μ≥0.8H0:μ≥0.8
Ha:μ<0.8Ha:μ<0.8
H0:p≤0.8H0:p≤0.8
Ha:p>0.8Ha:p>0.8
The test is:
right-tailed
two-tailed
left-tailed
Based on a sample of 300 people, 82% owned cats
The p-value is: (to 2 decimals)
Based on this we:
Fail to reject the null hypothesis
Reject the null hypothesis

Test the claim that the mean GPA of night students is
significantly different than 3.2 at the 0.05 significance
level.
The null and alternative hypothesis would be:
H0:μ≥3.2H0:μ≥3.2
H1:μ<3.2H1:μ<3.2
H0:μ≤3.2H0:μ≤3.2
H1:μ>3.2H1:μ>3.2
H0:p=0.8H0:p=0.8
H1:p≠0.8H1:p≠0.8
H0:p≤0.8H0:p≤0.8
H1:p>0.8H1:p>0.8
H0:μ=3.2H0:μ=3.2
H1:μ≠3.2H1:μ≠3.2
H0:p≥0.8H0:p≥0.8
H1:p<0.8H1:p<0.8
The test is:
right-tailed
two-tailed
left-tailed
Based on a sample of 25 people, the sample mean GPA was 3.19 with a
standard deviation of 0.08
The p-value is: (to 2 decimals)
Based on this we:
Reject the null hypothesis
Fail to reject...

1) Test the claim that the proportion of people who own cats is
smaller than 80% at the 0.01 significance level.
a) The null and alternative hypothesis would be:
H0:p=0.8
H1:p≠0.8
H0:μ=0.8
H1:μ≠0.8
H0:μ≤0.8
H1:μ>0.8
H0:p≥0.8
H1:p<0.8
H0:μ≥0.8
H1:μ<0.8
H0:p≤0.8
H1:p>0.8
b) The test is:
2) Based on a sample of 500 people, 75% owned cats
a) The test statistic is: ________ (to 2 decimals)
b) The p-value is: _________ (to 2 decimals)
3) Based on this we:
Reject the...

Test the claim that the mean GPA of night students is
significantly different than 3.2 at the 0.01 significance
level.
The null and alternative hypothesis would be:
A) H0:μ=3.2H0:μ=3.2
H1:μ≠3.2H1:μ≠3.2
B) H0:μ=3.2H0:μ=3.2
H1:μ<3.2H1:μ<3.2
C) H0:p=0.8H0:p=0.8
H1:p≠0.8H1:p≠0.8
D) H0:μ=3.2H0:μ=3.2
H1:μ>3.2H1:μ>3.2
E) H0:p=0.8H0:p=0.8
H1:p>0.8H1:p>0.8
F) H0:p=0.8H0:p=0.8
H1:p<0.8H1:p<0.8
The test is:
A) right-tailed
B) two-tailed
C) left-tailed
Based on a sample of 25 people, the sample mean GPA was 3.15 with a
standard deviation of 0.03
The test statistic is:___ (to 2 decimals)...

Test the claim that the proportion of people who own cats is
smaller than 10% at the 0.05 significance level.
The null and alternative hypothesis would be:
H0:p≥0.1H0:p≥0.1
H1:p<0.1H1:p<0.1
H0:p=0.1H0:p=0.1
H1:p≠0.1H1:p≠0.1
H0:μ≤0.1H0:μ≤0.1
H1:μ>0.1H1:μ>0.1
H0:p≤0.1H0:p≤0.1
H1:p>0.1H1:p>0.1
H0:μ≥0.1H0:μ≥0.1
H1:μ<0.1H1:μ<0.1
H0:μ=0.1H0:μ=0.1
H1:μ≠0.1H1:μ≠0.1
The test is:
right-tailed
left-tailed
two-tailed
Based on a sample of 100 people, 9% owned cats
The p-value is: (to 2 decimals)
Based on this we:
Reject the null hypothesis
Fail to reject the null hypothesis

Test the claim that the proportion of people who own cats is
smaller than 70% at the 0.10 significance level.
The null and alternative hypothesis would be:
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: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
The test is:
left-tailed
two-tailed
right-tailed
Based on a sample of 300 people, 65% owned cats
The test statistic is: (to 2 decimals)
The p-value is: (to 2 decimals)
Based on this we:
Reject the null hypothesis
Fail to reject the null hypothesis

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 10 minutes ago

asked 23 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago