Step-by-step explanation:
<u>1. Divide 8 1/3 by 2 to find the value of x:</u>
<u>Turn</u><u> </u><u>8</u><u> </u><u>1</u><u>/</u><u>3</u><u> </u><u>into</u><u> </u><u>an</u><u> </u><u>improper</u><u> </u><u>fraction</u><u>:</u>
<u>Find the reciprocal (opposite) of 2/1, then multiply:</u>
x = 25/6 or 4 1/6
<u>2. 8.1 can be put over 1</u><u>:</u>
<u>Turn</u><u> </u><u>2</u><u> </u><u>1</u><u>/</u><u>3</u><u> </u><u>into</u><u> </u><u>an</u><u> </u><u>improper</u><u> </u><u>fraction</u><u>:</u>
<u>Find</u><u> </u><u>the</u><u> </u><u>reciprocal</u><u> </u><u>(</u><u>opposite</u><u>)</u><u> </u><u>of</u><u> </u><u>8</u><u>.</u><u>1</u><u>/</u><u>1</u><u>,</u><u> </u><u>then</u><u> </u><u>multiply</u><u>:</u>
7/24.3 is your simplified answer.
Answer:
average hours worked = 8 hours / day
Explanation:
To get the average, we divide the total number of hours worked by the total number of days.
i.e.
average hours worked = total number of hours / total number of days
From the givens we have:
Total number of hours = 8 + 10 + 7 + 9 + 6 = 40 hours
Total number of days = 5 days
Substitute in the above rule to get the average as follows:
average hours worked = 40 / 5 = 8 hours / day
Hope this helps :)
1/5 of them which is 6
6 students got an a
Answer:
the first option is the answer
<h2><u>
Answer with explanation:</u></h2>
Formula to find the confidence interval for population mean :-
, where = sample mean.
t*= critical z-value
n= sample size.
s= sample standard deviation.
By considering the given question , we have
n= 50
Degree of freedom : df = 49 [ df=n-1]
Significance level :
Using students's t-distribution table, the critical t-value for 95% confidence =
Then, 95% confidence interval for the population mean will be :
Hence, a 95% confidence interval for the population mean = (24.24, 27.76)
Since 28 is not contained in the above confidence interval , it means it is not reasonable that the population mean is 28 weeks.