Step-by-step explanation:
2x-4x=1
-2x=1
x=-1/2
<em>hope</em><em> </em><em>it</em><em> </em><em>helps</em><em> </em><em>you</em>
Answer:
0.3575
Step-by-step explanation:
A population with a normal distribution has a mean of 104 and a standard deviation of 15. A sample of 30 items is taken from that population. (a) (4 points) What is the probability of the sample mean is not less than 103?
The probability of the sample mean is not less than 103 means the sample mean is equal to 103
We solve using the z score formula
z = (x-μ)/σ/√n
where
x is the raw score = 103
μ is the population mean = 104
σ is the population standard deviation = 15
n is the random number of sample = 30
z = 103 - 104/15/√30
z = -1/2.7386127875
z = -0.36515
Probability value from Z-Table:
P(x≤ 103) = 0.3575
Therefore, the probability of the sample mean is not less than 103 is 0.3575
Step-by-step explanation:
Since we have given that
Number of hour Marco practiced the piano on Monday is given by
Number of hours Marco practiced the piano on Tuesday is given by
1) For Adding :
Total number of hours he practiced on both Monday and Tuesday will be
2) For Subtraction,
Number of hour he practiced more on Tuesday than on Monday will be
Answer:
6
Step-by-step explanation:
2,400 divided by 400 = 6
Answer:
that is 149.129 miles (thats the answer)
