Answer:
a)
The probability of type I error is 0.5
b)
Type II error is an error committed when we fail to reject a false null hypothesis. The probability of Type II error is beta and 1 -beta gives the power of a test.
Step-by-step explanation:
The probability of a Type I error is the probability of rejecting the null hypothesis when it is actually true. In this case;
pr(x>0 / mu =0)
If the mean is 0 and sigma 1 then x has the standard normal distribution. Now, if x has the standard normal distribution then pr(x>0) = 0.5 since the standard normal distribution curve is symmetric about the mean which in this case is 0.
Answer:
x = 60
Step-by-step explanation:
multiply 12 by 5 to get the numerator. 12/5 = 60.
to check, divide the numerator by the denominator.
Is/of = x/100
$816/$1166.30 = x/100
0.699=x/100
x= 0.699•100%
x= 69.9% ≈ 70%
Answer:
Step-by-step explanation:
If half a number is 120, then the number before it was cut in half is 240. What we need to find now is 14% of 240.
"14% of 240 is what" in an algebraic equation looks like this:
.14(240) = x and
x = 33.6
Answer:
1090
Step-by-step explanation: