If a single fair die is rolled find the probability of a 3 given that the number rolled is odd
2 answers:
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Answer:
36 cups of water
Step-by-step explanation:
Make a proportion, where x is the number of cups of water needed:
=
Cross multiply and solve for x:
2x = 72
x = 36
So, 36 cups of water will be needed
Answer:
There is evidence to prove that mean is less than 60 hours.
Step-by-step explanation:
Given that the mean work week for engineers in a start-up company is believed to be about 60 hours.
Sample size taken = 10
(left tailed test )
Data (length of mean work week): 70; 45; 55; 60; 65; 55; 55; 60; 50; 55.
Mean difference = -3
Test statistic t =mean differene/std error
= -20.72
p value <0.00001
Since p < 0.05 at 5% level we reject H0
There is evidence to prove that mean is less than 60 hours.