Answer:
the first one and the last one
Step-by-step explanation:
the other 2 have numbers above 1.
Answer: g = 4
Step-by-step explanation:
30 = 26+g
4 = g
The question is incomplete:
The dot plot shows the number of hours Stan worked each week for the last 3 months.
What fraction of the total number of weeks did Stan work 15 or more hours? Express in simplest form.
A. 5/7
B. 1/6
C. 1/5
D. 5/12
The image with the dot plot is attached.
Answer:
D. 5/12
Step-by-step explanation:
The dot plot shows the number of hours Stan worked and in order to know the number of weeks that he worked 15 hours or more, you have to count the dots that are between 15 and 18 hours. So, you have 3 dots in 15 hours, 1 dot in 16 hours and 1 dot in 18 hours. If you add this numbers (3+1+1=5), this means that he worked 5 weeks 15 or more hours. This number would be the numerator in your fraction. Then, the denominator would be the total amount of weeks and to find that you can count all the dots. The total number of dots is 12.
So, the fraction that represents the total number of weeks that Stan worked 15 or more hours is: 5/12. This is the simplest form because this numbers don't have any common factors other than 1.
Answer: 6
Step-by-step explanation:
You would divide the number by the other number to get the awnser
Answer: 7881
Step-by-step explanation:
Given : A certain type of light bulb has an average life of 900 hours, with a standard deviation of 100 hours.
i.e.
Let x be the random variable that represents the length of life of the bulb .
Now , we find the z-score for this :
For x=820
Now, the probability that the length of life of the bulb is more than 820 hours is given by :-
Now, the number of bulbs installed in amusement park =10,000
Then , the number that can be expected to last more than 820 hours :-