Answer:
The value of the test statistic is -1.53
Step-by-step explanation:
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 96 hours
Sample mean, 
= 95 hours
Sample size, n = 150
Alpha, α = 0.05
Population standard deviation, σ = 8 hours
Formula:
Putting all the values, we have
Thus, the value of the test statistic is -1.53
When you set up 3 * (1/3), you're both multiplying and dividing by a 3. these two cancel out, and you're left with one. 3 *(1/3) is simply 1.
12 * (1/3), when you set it up, doesn't cancel out the same. multiply straight across the top (12 * 1), then divide by the bottom (3). 12/3 = 4, so 12*(1/3) is 4.
9 * (1/9) gives you the same result as the first one. the multiplied 9 and the divided 9 cancel out, and you're left with 1.
We have A number of apples, each purchased at 15 cents.
We can, thus, calculate the total cost of apples as follows:
Total cost of apples = 15A cents
We have B number of bananas, each purchased at 10 cents.
We can, thus, calculate the total cost of bananas as follows:
Total cost of bananas = 10B cents
Now, the total cost of purchases can be calculated by adding the amount paid for both types (apples and bananas) as follows:
Total cost = cost of apples + cost of bananas = 15A + 10B cents
Answer:
-12x^3 + 8x^2
Step-by-step explanation:
