What is the answer to 3x+2-x=11x-9
2 answers:
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Answer:
the probability of a Type II error if in fact the mean waiting time u, is 9.8 minutes is 0.1251
Option A) is the correct answer.
Step-by-step explanation:
Given the data in the question;
we know that a type 11 error occur when a null hypothesis is false and we fail to reject it.
as in it in the question;
obtained mean is 9.8 which is obviously not equal to 8.3
But still we fail to reject the null hypothesis says mean is 8.3
Hence we have to find the probability of type 11 error
given that; it is right tailed and o.5, it corresponds to 1.645
so
z is equal to 1.645
z = (x-μ)/
where our standard deviation s = 3.8
sample size n = 50
mean μ = 8.3
we substitute
1.645 = (x - 8.3)/
1.645 = (x - 8.3) / 0.5374
0.884023 = x - 8.3
x = 0.884023 + 8.3
x = 9.18402
so, by general rule we will fail to reject the null hypothesis when we will get the z value less than 1.645
As we reject the null hypothesis for right tailed test when the obtained test statistics is greater than the critical value
so, we will fail to reject the null hypothesis as long as we get the sample mean less than 9.18402
Now, for mean 9.8 and standard deviation 3.8 and sample size 50
Z = (9.18402 - 9.8)/
Z = -0.61598 / 0.5374
Z = - 1.1462 ≈ - 1.15
from the z-score table;
P(z<-1.15) = 0.1251
Therefore, the probability of a Type II error if in fact the mean waiting time u, is 9.8 minutes is 0.1251
Option A) is the correct answer.
Answer:
The autofilled values would be Seat1Row4, Seat1Row5, Seat1Row6
Step-by-step explanation:
Given
B1 = Seat1Row1
C1 = Seat1Row2
D1 = Seat1Row3
Required
Values of E1, F1, G1 if autofilled
Autofill in Microsoft Office Excel (Ms Excel).is used to automatically fill cells base on suggestion from previous cells.
The autofill feature of Ms Excel works data types such as numbers and alphanumeric among others.
But for autofill to work on alphanumeric in Ms Excel, only the numeric part will be altered.
In this case, the series of text in B1, C1 and D1 are Seat1Row1, Seat1Row2, Seat1Row3
"Seat1Row" will be regarded as string while 1,2,3 will be incremented and the resulting alphanumeric values will be saved in their respective cells.
Hence,
Cell E1 will be filled with Seat1Row4
F1 will be filled with Seat1Row5
G1 will be filled with Seat1Row6
See attachment
