Answer:
To find the volume, you multiply length times width times height.
3x2x4
voluume = 24
Step-by-step explanation:
The dicount amount is $113
the final price is $827,20
Answer:
Step-by-step explanation:
Given that
sample size =n= 50
x bar = sample mean = 10.8
s = sample std deviation = 3.3
Mean difference = 50-10 = 40
Std error of sample = std dev / sqrt n=
Since population std dev is not known, we have to use t test
Test statistic t = Mean diff/std error = 
df = 39
p value = 0.0000
Since p < 0.09 our significance level, we reject our null hypothesis.
A. There is sufficient evidence to reject Upper H 0 for alpha greater than 0.09
Answer:
a) P(X ≤ 4) = 0.9
b) P(X>7) = 0
c) P(X ≤ 5) = 0.9
d) P(X>4) = 0.1
e) P(X≤2)= 0.7
Step-by-step explanation:
Hello!
Given the distribution of cumulative probability
0 for X < 1
F(x) 0.7 for 1 ≤ X < 4
0.9 for 4 ≤ X < 7
1 for 7 ≤ X
To determine each of the asked probabilities you have to select the probability corresponding to the defined intervals for X:
a) P(X ≤ 4) = 0.9
This value of X is included the interval "4 ≤ X < 7" so the corresponding probability is 0.9
b) P(X>7) = 0
This is equal to the expression:
1 - P(X≤7)
This expression is included in the last interval so the probability is 1
1 - 1 = 0
c) P(X ≤ 5) = 0.9
5 is included in the third interval "4 ≤ X < 7" so the corresponding probability is 0.9
d) P(X>4) = 0.1
P(X>4) = 1 - P(X≤4)
P(X≤4) is in the interval of definition "4 ≤ X < 7" so the corresponding probability is 0.9
1 - 0.9 = 0.1
e) P(X≤2)= 0.7
The value X=2 is included in the second interval "for 1 ≤ X < 4", so the probability is 0.7
I hope it helps!
Answer:
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