Question

Asked Dec 12, 2019

1 views

Please answer number ten.

Step 1

The appropriate Null and Alternative Hypotheses are given below:

From the given information, the claim of the problem is the person’s hearing is worse after being affected by the noise of a concert.

** **

**Null hypothesis:**

* *

*H*0: µbefore= µafter.

That is, the person’s hearing is same for before and after being affected by the noise of a concert.

**Alternative hypothesis:**

* *

*H*1: µafter< µbefore.

** **

That is, the person’s hearing is worse after being affected by the noise of a concert.

Here, the hearing test is given for **same persons** are compared. Hence, the appropriate test for given testing is **paired t test**.

The test statistic is **-3.266** and it is obtained below:

**Excel Procedure:**

- Enter the data for before and after in Exc...

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: THE ANSWER IS MOT 1040 NOR 1041. THAT IS WRONG !

A: Given DataError = 4% = 0.04Confidence level = 0.99Significance level = α=1-0.99=0.01

Q: E Question Help Qu A physical therapist wants to detemine the difference in the proportion of men an...

A: (a)From the given information, 99% confidence estimate of the difference in the true proportions wil...

Q: An analysis is conducted to compare mean time to pain relief (measured in minutes) under four compet...

A: A)Calculating the SS between subjects:The required SS between subjects is calculated as follows:

Q: Using traditional methods it takes 8.2 hours to receive a basic flying license. A new license traini...

A: The decision rule for rejecting the null hypothesis is obtained below:Here, the sample size is, (n)...

Q: A study on the latest fad diet claimed that the amounts of weight lost by all people on this diet ha...

A: Given information:Population mean = 24.0Population standard deviation = 7.4Sample size (n) = 57

Q: The following data show the yearly salaries of football coaches at some state supporteduniversities....

A: The 90% confidence interval estimate of the variance of the ball bearings in the population is obtai...

Q: In a random sample of six people, the mean driving distance to work was 25.7 miles and the stan...

A: The margin of error is 5.8 and it is obtained below: From the given information, there are 6 people,...

Q: A random sample of 41 car owners was taken to try to determine the mean length of car ownership for ...

A: From the given information,Sample size (n) = 41Sample mean (µ) =3.98Sample standard deviation (s) = ...

Q: l 11% cricket M 8:10 PM Final Exam (Chapter 7-12) Time to Complete the Course Right| 45 || 4 || 50 |...

A: a).Hypotheses:The t-test for the difference between two dependent population means:Null hypothesis:H...