Answer:
Have a pic?
Step-by-step explanation:
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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:
x is 5 cm as the entire base is 10 cm, so 10/2 = 5
Hello!
To solve this equation, we will need to use PEMDAS (parentheses, then exponents, then multiplication/division, then addition/subtraction).
7(3) + (-9) x (-4) =
21 + (-9) x (-4) =
21 + 36 =
57
I hope this helps you! Have a lovely day!
- Mal