Subject Mathematics General Statistics

Question

We want to test whether the data taken from 20 test experiments is less than or 0 (µ < 0).
a. What is the null hypothesis Ho for our test (remember Ho always has an equals sign in it by convention) ?
b. What is the alternative hypothesis Ha?
c. What type of tail test will we use? (left tail, right tail, or two tails)?
d. What is the mean of the sample xbar?
e. What is the standard deviation of the sample s?
f. What is the size of the sample n?
g. We going to use a t-statistic. Explain why we are not going to use a z-statistic.
h. Calculate the t-statistic using xbar, µ, n, and s.
i. How many degrees of freedom does this data set have?
j. Use the t-distribution calculator to compute a p-value. Include a screen shot of your answer.
k. Typically, we want a 90% confidence level. Based on your value of p, should we accept or reject the null hypothesis?
l. What if we want a 95% confidence level? Based on your value of p, should we accept or reject the null hypothesis?
Data
-1
2
-3
1
-1
0
-4
5
-2
1
-3
2
-1
2
-4
3
0
1
-2
2

Solution Preview

This material may consist of step-by-step explanations on how to solve a problem or examples of proper writing, including the use of citations, references, bibliographies, and formatting. This material is made available for the sole purpose of studying and learning - misuse is strictly forbidden.

We want to test whether the data taken from 20 test experiments is less than or 0 (µ < 0).
a. What is the null hypothesis Ho for our test (remember Ho always has an equals sign in it by convention) ?
H0 : (µ >= 0)
b. What is the alternative hypothesis Ha?
Ha : (µ < 0)...

This is only a preview of the solution. Please use the purchase button to see the entire solution

$30.00

or $1 if you
register a new account!

Assisting Tutor

Related Homework Solutions

Rainfall Statistics
Homework Solution
$10.00
Mathematics
Statistics
Rainfall
SPSS
Deviation
Population
Interval
Average
Statistics Questions
Homework Solution
$65.00
Statistics
Mathematics
Z Scores
Variance
Standard Deviation
Proportion
Mean
Linear Correlation
Regression Line
Confidence Intervals
Hypothesis
Alpha Value
Random Sample
Chi-Square Distribution
Significance Level
Statistics Questions: Coastal and Inland Regions
Homework Solution
$25.00
Statistics
Mathematics
ANOVA
Statistical Evidence
Null Hypothesis
Total Rainfall
Mean
Inland Regions
Coastal Regions
Sample Data
Confidence Levels
Alternative Hypothesis
Get help from a qualified tutor
Live Chats