In a sale, the cost of a coat is reduced from $85 to $67.50 .
2 answers:
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Answer:
y = -4x + 8
Step-by-step explanation:
Slope-Intercept Form: y = mx + b
Slope Formula:
Step 1: Find slope <em>m</em>
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m = -4
y = -4x + b
Step 2: Find y-intercept <em>b</em>
4 = -4(1) + b
4 = -4 + b
8 = b
Step 3: Rewrite linear equation
y = -4x + 8
Answer:
The 99% confidence interval for the mean peak power after training is [299.4, 330.6]
Step-by-step explanation:
We have to construct a 99% confidence interval for the mean.
A sample of n=7 males is taken. We know the sample mean = 315 watts and the sample standard deviation = 16 watts.
For a 99% confidence interval, the value of z is z=2.58.
We can calculate the confidence interval as:
The 99% confidence interval for the mean peak power after training is [299.4, 330.6]