Step-by-step explanation:
$10 per hour
9am to 3 pm = 6 hours
6 hours for 5 days = 6 × 5 = 30 hours
Amount earned for 5 days = $10 × 30 = $300
5% commission on $3,100 sales =
5/100 × 3100 = $155
Total earned = $300 + $155 = $455
Use the slope formula below:

The m-term represents the slope.
The formula is the changes of two y-points over the changes of two x-points. We are given two points. Substitute both points in the formula.

Therefore the slope is -8/3
Answer
Hope this helps! Let me know if you have any doubts.
Answer: The probability of this ocurring by chance is less than 0.01.
The meaning of the significance level is that it tells that there is difference of 1% level when there is no actual difference.
Step-by-step explanation:
Since we have given that
Number of times a coin tossed = 500
Number of times head occurs = 416
So, our Z-score would be

So, At significance level of 0.01, p-value of Z-score is .202704.
and p-value < 0.01, i.e. 0.202704<0.832.
Hence, the probability of this ocurring by chance is less than 0.01.
The meaning of the significance level is that it tells that there is difference of 1% level when there is no actual difference.