Answer: This is already simplified.
Step-by-step explanation: This is already simplified because it already gives the value of x.
From the information given, a right-tailed test using the z-distribution is appropriate.
At the null hypothesis, it is <u>tested if the class of statistics students is not significantly smarter than the general population</u>, that is, their mean IQ is of at most 100, hence:
At the alternative hypothesis, it is <u>tested if they are significantly smarter</u>, that is, their mean IQ is greater than 100, hence:
- We are testing if the mean is <u>greater than a value</u>, hence it is a right-tailed test.
- We have the <u>standard deviation for the population</u>, hence, the z-distribution is used.
A similar problem is given at brainly.com/question/23413408
Answer:
Hm
Step-by-step explanation:
Answer:
A.
Step-by-step explanation:
Given:
Volume of cylinder =
The volume of cylinder is given by :
where represents volume, represents radius and represents height of cylinder.
The cylinder is being redesigned by a package designer who keeps the volume constant st and rearranges the formula to give height in terms of radius.
[ Substituting ]
Dividing both sides by .
Answer:
Its 255+x=180 => so x=105