![alexius6608](/avatars/31150.jpg)
alexius6608
22.04.2020 •
Mathematics
Using traditional methods, it takes 10.0 hours to receive a basic driving license. A new license training method using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique with 12 students and observed that they had a mean of 10.2 hours with a standard deviation of 1.1. A level of significance of 0.05 will be used to determine if the technique performs differently than the traditional method. Assume the population distribution is approximately normal. Find the value of the test statistic. Round your answer to three decimal places.
Solved
Show answers
More tips
- F Family and Home Ways to Attract Wealth into Your Home...
- F Family and Home 5 Tips for Choosing Toys for Your Child...
- L Leisure and Entertainment How to Find a Phone Number by Address: The Ultimate Guide...
- P Philosophy How to Properly Create a Vision Board?...
- C Computers and Internet What is Web 2.0 and How Does it Work?...
- S Style and Beauty Is Photoepilation the Solution to Unwanted Hair Forever?...
- O Other What is a Disk Emulsifier and How Does it Work?...
- F Family and Home What does a newborn need?...
- F Family and Home Choosing the Right Car Seat for Your Child: Tips and Recommendations...
- F Food and Cooking How to Get Reconfirmation of Registration?...
Answers on questions: Mathematics
- M Mathematics Which expression is equivalent to the expression shown? exponent: 3 -3 a. -27 b.27 c. -1/27 d. 1/27...
- M Mathematics PLS HELP PLS PLS PLSPLS HELP WILL BE SO GRATEFUL I WILL DEFINETLY GIVE BRAINLIEST NO ONE HAS BEEN HELPING ME IVE BEEN ASKING FOR 2 DAYS PLSSSS :(...
- H History All of the following are reasons the u.s declared war on spain except: a. to take control of guam b. sympathy for their desire for independence c. sinking of the uss maine d. protect...
- M Mathematics In order to clear away the fractions from (4x/9)-(8y/5)=5 , which of the following numbers can we use to multiply both sides of the equation?...
- M Mathematics The dot plots below show rainfall totals in the highlands and lowlands areas of a certain region.when comparing the two sets of data, which is a true statement?...
Ответ:
The t-statistic is t=0.631.
Step-by-step explanation:
We have to perform an hypothesis test on the mean.
The claim is that the new method performs different from the actual method.
Then, the null and alternative hypothesis are:
The significance level is 0.05.
The sample has a size n=12. The sample mean is 10.2 hours and the sample standard deviation is 1.1.
As the population standard deviation is not known, we will estimate it from the sample standard deviation and use a t-statistic.
The degrees of freedom are:
The t-statistic is:
The P-value of this two-tailed test, with t=0.631 and df=11, is
The P-value is bigger than the significance level, so the effect is not significant and the null hypothesis failed to be rejected.
Ответ:
Since is a two sided test the p value would be:
Step-by-step explanation:
Data given and notation
represent the value that we want to test
t would represent the statistic (variable of interest)
State the null and alternative hypotheses.
We need to conduct a hypothesis in order to check if the technique performs differently than the traditional method, 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:
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 two sided test the p value would be:
Ответ:
5 classes and 37.5 dollars monthly
Step-by-step explanation:
i just did it on E2020 ur welcome