Girly8081
19.02.2020 •
Mathematics
For the next two questions, let the null and alternative hypotheses be LaTeX: H_0H 0: LaTeX: \mu=\:8μ = 8 and LaTeX: H_aH a : LaTeX: \mu>8μ > 8. Assume that the population standard deviation LaTeX: \sigmaσ is not known. Becca collects a sample of size LaTeX: n=9n = 9 and computes LaTeX: \overline{x}=11x ¯ = 11 and LaTeX: s=6s = 6. Is LaTeX: \sigmaσ known?
Solved
Show answers
More tips
- B Business and Finance How to Create a Business Plan? Your Ultimate Guide...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
- H Health and Medicine Kinesiology: What is it and How Does it Work?...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
Answers on questions: Mathematics
- M Mathematics Most soda cans list the volume of soda as 12 fluid ounces. as with all process, some variation occurs when filling soda cans. suppose that a company knows this and tries...
- M Mathematics Xin uses 20 yards of fencing to build the walls of a square chicken coop. Which equation and solution represent x,the length, in yards, of each wall of the square coop?...
- S Social Studies About how many different insects are known? hundreds several thousand millions more than 100 thousand...
- G Geography Do you think that the continents will ever rejoin to form another supercontinent like Pangaea? yes or no?...
- M Mathematics Can someone please explain how I apply SOHCAHTOA properly to this?...
Ответ:
If we compare the p value and the significance level assumed we see that so we can conclude that we have enough evidence to fail reject the null hypothesis, we can conclude that the mean is higher than 8 at 5% of signficance.
Step-by-step explanation:
Data given and notation
represent the mean height for the sample
represent the sample standard deviation for the sample
sample size
represent the value that we want to test
represent the significance level for the hypothesis test. (assumed)
t would represent the statistic (variable of interest)
represent the p value for the test (variable of interest)
State the null and alternative hypotheses.
We need to conduct a hypothesis in order to check if the mean is higher than 8, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
If we analyze the size for the sample is < 30 and we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:
(1)
t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".
Calculate the statistic
We can replace in formula (1) the info given like this:
P-value
The first step is calculate the degrees of freedom, on this case:
Since is a one side upper test the p value would be:
Conclusion
If we compare the p value and the significance level assumed we see that so we can conclude that we have enough evidence to fail reject the null hypothesis, we can conclude that the mean is higher than 8 at 5% of signficance.
Ответ:
person a is stronger i think bc i minus their weight by how much they can lift and person a seems to be able to lift more
Step-by-step explanation: