JH
Jessica Hernandez
Answers (7)
JH
Answered
We are interested in conducting a study to determine the percentage of voters of a state would vote for the incumbent governor.What is the minimum sample size needed to estimate the population proportion with a margin of error of .05 or less at 95% confidence?
A) 200.
B) 100.
C) 58.
D) 385.
A) 200.
B) 100.
C) 58.
D) 385.
On Jul 16, 2024
D
JH
Answered
{Airlines Ranking Narrative} Can we conclude at the 5% significance level that there are differences in service quality among the four airlines?
On Jul 13, 2024
H0: The locations of all four populations are the same. H1: At least two population locations differ. Rejection region: 
Test statistic: 
Conclusion: Don't reject the null hypothesis.We can't conclude at the 5% significance level that there are differences in service quality among the four airlines.
Test statistic: Conclusion: Don't reject the null hypothesis.We can't conclude at the 5% significance level that there are differences in service quality among the four airlines.JH
Answered
What amount must be invested today to allow for quarterly payments of $2,500 at the end of every quarter for 15 years after a six-year deferral period? Assume that the funds will earn 5% compounded semi-annually.
On Jun 15, 2024
$78,297.55
JH
Answered
Given that the sum of squares for error is 60 and the sum of squares for regression is 140, then the coefficient of determination is:
A) 0.429
B) 0.300
C) 0.700
D) 0.837
E) 1
A) 0.429
B) 0.300
C) 0.700
D) 0.837
E) 1
On Jun 12, 2024
C
JH
Answered
Combine and simplify. 517x−117x\frac { 5 } { 17 x } - \frac { 1 } { 17 x }17x5−17x1
A) −617x- \frac { 6 } { 17 x }−17x6
B) 417x\frac { 4 } { 17 x }17x4
C) −417x- \frac { 4 } { 17 x }−17x4
D) 117x\frac { 1 } { 17 x }17x1
E) 617x\frac { 6 } { 17 x }17x6
A) −617x- \frac { 6 } { 17 x }−17x6
B) 417x\frac { 4 } { 17 x }17x4
C) −417x- \frac { 4 } { 17 x }−17x4
D) 117x\frac { 1 } { 17 x }17x1
E) 617x\frac { 6 } { 17 x }17x6
On May 16, 2024
B
JH
Answered
The ____________________ correlation coefficient is used to look for a relationship between x and y when both variables are interval but do not have normal distributions.
On May 13, 2024
Spearman rank
Spearman's rank
Spearman's rank
JH
Answered
The bar graph below represents the highest education level achieved for 30 random females and 60 random males questioned on a street in downtown Washington,DC. 
What percentage of women completed at most their junior year?
A) 5%
B) 17%
C) 67%
D) 100%
What percentage of women completed at most their junior year?A) 5%
B) 17%
C) 67%
D) 100%
On May 09, 2024
B