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:
![H_0: \mu \leq 100](https://tex.z-dn.net/?f=H_0%3A%20%5Cmu%20%5Cleq%20100)
At the alternative hypothesis, it is <u>tested if they are significantly smarter</u>, that is, their mean IQ is greater than 100, hence:
![H_1: \mu > 100](https://tex.z-dn.net/?f=H_1%3A%20%5Cmu%20%3E%20100)
- 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: 12 metres
Step-by-step explanation:
The scale factor used for the model is 1 : 30.
This means that for any 1cm on the model, the real boat would be 30 cm.
If the height is 40 cm on the model, the real boat will be 30 times that:
= 40 * 30
= 1,200 cm
A metre is equivalent to 100cm.
1,200 cm would therefore be:
= 1,200/100
= 12 metres
Hey there!
24 tenths is 240
3 tenths is 30
1 one= 1
240-1=239
239-30=
209
Hope it helps!
Answer:
A
f(9) = 5
Step-by-step explanation:
Ex:
If we have an x value of 9, it would look like
f (9) = 9 + y-intercept
So in this situation we have a x-value of 9.
We know that at 9, y = 5.
So f (9) = 5.
If for every 4 bananas there is 1 peach, and there are 4 peaches in the fruit basket, then that means there are 16 bananas in the fruit basket and 16+4=20 so your answer is 20!