A drawer contains black socks and white socks. 80% of the socks are white socks. A number generator simulates randomly selecting
10 socks from the drawer. The number generator is used 10 times and the number of white socks in each trial is shown in the dot plot.
Which description is correct about the number generator being fair or not?
Which description is correct about the number generator being fair or not?
2 answers:
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Answer:
a. The average number of hashtags used in a social media post from a marketing agency is different than 7 hashtags.
Step-by-step explanation:
A social media platform states that a social media post from a marketing agency has 7 hashtags, on average.
This means that at the null hypothesis, we test if the mean is 7, that is:
A digital marketing specialist studying social media advertising believes the average number of hashtags used in a post from a marketing agency is different than the number stated by the social media platform.
Keyword is different, so at the null hypothesis, we test if the mean is different of 7, that is:
Thus, the correct answer is given by option a.
If restaurant rotates 
every 15 minutes, then after one hour it will rotate 
.
When restaurant makes full rotation
, the length will be 
. But 
<span>is only 
from the full rotation, so the bird will pass 
ft
</span><span>
</span><span>Answer: B is a correct choice
</span>
When restaurant makes full rotation
</span><span>
</span><span>Answer: B is a correct choice
</span>