The sum of the length, width, and height of a rectangular package is 126 inches. If the length is 2 inches longer than five tim
1 answer:
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The value of is 720
The expression is given as:
The permutation formula is:
So, we have:
Evaluate the difference
0! = 1.
So, we have:
Evaluate the factorial
Hence, the value of is 720
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Answer:
D. The 95% confidence interval ranges from 42.78 to 47.22 hours.
Step-by-step explanation:
In a sample of 50 households, the mean number of hours spent on social networking sites during the month of January was 45 hours. In a much larger study, the standard deviation was determined to be 8 hours.
Here,
n = sample size = 50,
μ = mean = 45,
σ = standard deviation = 8,
We know that, confidence interval will be,
For a confidence interval of 95%, we use z = 1.96, putting the values